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<html><head><title>dlib C++ Library - pngpriv.h</title></head><body bgcolor='white'><pre> |
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<font color='#009900'>/* pngpriv.h - private declarations for use inside libpng |
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* |
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* For conditions of distribution and use, see copyright notice in png.h |
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* Copyright (c) 1998-2013 Glenn Randers-Pehrson |
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
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* |
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* Last changed in libpng 1.6.7 [November 14, 2013] |
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* |
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* This code is released under the libpng license. |
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* For conditions of distribution and use, see the disclaimer |
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* and license in png.h |
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*/</font> |
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<font color='#009900'>/* The symbols declared in this file (including the functions declared |
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* as extern) are PRIVATE. They are not part of the libpng public |
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* interface, and are not recommended for use by regular applications. |
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* Some of them may become public in the future; others may stay private, |
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* change in an incompatible way, or even disappear. |
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* Although the libpng users are not forbidden to include this header, |
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* they should be well aware of the issues that may arise from doing so. |
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*/</font> |
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<font color='#0000FF'>#ifndef</font> PNGPRIV_H |
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<font color='#0000FF'>#define</font> PNGPRIV_H |
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<font color='#009900'>/* Feature Test Macros. The following are defined here to ensure that correctly |
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* implemented libraries reveal the APIs libpng needs to build and hide those |
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* that are not needed and potentially damaging to the compilation. |
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* |
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* Feature Test Macros must be defined before any system header is included (see |
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* POSIX 1003.1 2.8.2 "POSIX Symbols." |
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* |
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* These macros only have an effect if the operating system supports either |
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* POSIX 1003.1 or C99, or both. On other operating systems (particularly |
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* Windows/Visual Studio) there is no effect; the OS specific tests below are |
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* still required (as of 2011-05-02.) |
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*/</font> |
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<font color='#0000FF'>#define</font> _POSIX_SOURCE <font color='#979000'>1</font> <font color='#009900'>/* Just the POSIX 1003.1 and C89 APIs */</font> |
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<font color='#0000FF'>#ifndef</font> PNG_VERSION_INFO_ONLY |
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<font color='#009900'>/* Standard library headers not required by png.h: */</font> |
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# include <font color='#5555FF'><</font>stdlib.h<font color='#5555FF'>></font> |
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# include <font color='#5555FF'><</font>string.h<font color='#5555FF'>></font> |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#define</font> PNGLIB_BUILD <font color='#009900'>/*libpng is being built, not used*/</font> |
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<font color='#009900'>/* If HAVE_CONFIG_H is defined during the build then the build system must |
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* provide an appropriate "config.h" file on the include path. The header file |
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* must provide definitions as required below (search for "HAVE_CONFIG_H"); |
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* see configure.ac for more details of the requirements. The macro |
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* "PNG_NO_CONFIG_H" is provided for maintainers to test for dependencies on |
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* 'configure'; define this macro to prevent the configure build including the |
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* configure generated config.h. Libpng is expected to compile without *any* |
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* special build system support on a reasonably ANSI-C compliant system. |
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*/</font> |
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<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>HAVE_CONFIG_H<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font color='#5555FF'>!</font>defined<font face='Lucida Console'>(</font>PNG_NO_CONFIG_H<font face='Lucida Console'>)</font> |
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# include <font color='#5555FF'><</font>config.h<font color='#5555FF'>></font> |
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<font color='#009900'>/* Pick up the definition of 'restrict' from config.h if it was read: */</font> |
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# define PNG_RESTRICT restrict |
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<font color='#0000FF'>#endif</font> |
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<font color='#009900'>/* To support symbol prefixing it is necessary to know *before* including png.h |
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* whether the fixed point (and maybe other) APIs are exported, because if they |
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* are not internal definitions may be required. This is handled below just |
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* before png.h is included, but load the configuration now if it is available. |
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*/</font> |
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<font color='#0000FF'>#ifndef</font> PNGLCONF_H |
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# include "<font color='#CC0000'>pnglibconf.h</font>" |
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<font color='#0000FF'>#endif</font> |
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<font color='#009900'>/* Local renames may change non-exported API functions from png.h */</font> |
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<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_PREFIX<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font color='#5555FF'>!</font>defined<font face='Lucida Console'>(</font>PNGPREFIX_H<font face='Lucida Console'>)</font> |
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# include "<font color='#CC0000'>pngprefix.h</font>" |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifdef</font> PNG_USER_CONFIG |
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# include "<font color='#CC0000'>pngusr.h</font>" |
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<font color='#009900'>/* These should have been defined in pngusr.h */</font> |
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# ifndef PNG_USER_PRIVATEBUILD |
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# define PNG_USER_PRIVATEBUILD "<font color='#CC0000'>Custom libpng build</font>" |
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# endif |
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# ifndef PNG_USER_DLLFNAME_POSTFIX |
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# define PNG_USER_DLLFNAME_POSTFIX "<font color='#CC0000'>Cb</font>" |
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# endif |
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<font color='#0000FF'>#endif</font> |
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<font color='#009900'>/* Compile time options. |
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* ===================== |
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* In a multi-arch build the compiler may compile the code several times for the |
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* same object module, producing different binaries for different architectures. |
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* When this happens configure-time setting of the target host options cannot be |
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* done and this interferes with the handling of the ARM NEON optimizations, and |
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* possibly other similar optimizations. Put additional tests here; in general |
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* this is needed when the same option can be changed at both compile time and |
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* run time depending on the target OS (i.e. iOS vs Android.) |
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* |
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* NOTE: symbol prefixing does not pass $(CFLAGS) to the preprocessor, because |
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* this is not possible with certain compilers (Oracle SUN OS CC), as a result |
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* it is necessary to ensure that all extern functions that *might* be used |
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* regardless of $(CFLAGS) get declared in this file. The test on __ARM_NEON__ |
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* below is one example of this behavior because it is controlled by the |
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* presence or not of -mfpu=neon on the GCC command line, it is possible to do |
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* this in $(CC), e.g. "CC=gcc -mfpu=neon", but people who build libpng rarely |
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* do this. |
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*/</font> |
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<font color='#0000FF'>#ifndef</font> PNG_ARM_NEON_OPT |
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<font color='#009900'>/* ARM NEON optimizations are being controlled by the compiler settings, |
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* typically the target FPU. If the FPU has been set to NEON (-mfpu=neon |
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* with GCC) then the compiler will define __ARM_NEON__ and we can rely |
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* unconditionally on NEON instructions not crashing, otherwise we must |
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* disable use of NEON instructions: |
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*/</font> |
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# ifdef __ARM_NEON__ |
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# define PNG_ARM_NEON_OPT <font color='#979000'>2</font> |
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# <font color='#0000FF'>else</font> |
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# define PNG_ARM_NEON_OPT <font color='#979000'>0</font> |
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# endif |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#if</font> PNG_ARM_NEON_OPT <font color='#5555FF'>></font> <font color='#979000'>0</font> |
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<font color='#009900'>/* NEON optimizations are to be at least considered by libpng, so enable the |
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* callbacks to do this. |
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*/</font> |
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# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_neon |
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<font color='#009900'>/* By default the 'intrinsics' code in arm/filter_neon_intrinsics.c is used |
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* if possible - if __ARM_NEON__ is set and the compiler version is not known |
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* to be broken. This is control by PNG_ARM_NEON_IMPLEMENTATION which can |
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* be: |
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* |
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* 1 The intrinsics code (the default with __ARM_NEON__) |
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* 2 The hand coded assembler (the default without __ARM_NEON__) |
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* |
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* It is possible to set PNG_ARM_NEON_IMPLEMENTATION in CPPFLAGS, however |
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* this is *NOT* supported and may cease to work even after a minor revision |
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* to libpng. It *is* valid to do this for testing purposes, e.g. speed |
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* testing or a new compiler, but the results should be communicated to the |
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* libpng implementation list for incorporation in the next minor release. |
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*/</font> |
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# ifndef PNG_ARM_NEON_IMPLEMENTATION |
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# ifdef __ARM_NEON__ |
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# <font color='#0000FF'>if</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>__clang__<font face='Lucida Console'>)</font> |
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<font color='#009900'>/* At present it is unknown by the libpng developers which versions |
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* of clang support the intrinsics, however some or perhaps all |
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* versions do not work with the assembler so this may be |
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* irrelevant, so just use the default (do nothing here.) |
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*/</font> |
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# elif <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>__GNUC__<font face='Lucida Console'>)</font> |
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<font color='#009900'>/* GCC 4.5.4 NEON support is known to be broken. 4.6.3 is known to |
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* work, so if this *is* GCC, or G++, look for a version >4.5 |
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*/</font> |
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# <font color='#0000FF'>if</font> __GNUC__ <font color='#5555FF'><</font> <font color='#979000'>4</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <font face='Lucida Console'>(</font>__GNUC__ <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>4</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> __GNUC_MINOR__ <font color='#5555FF'><</font> <font color='#979000'>6</font><font face='Lucida Console'>)</font> |
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# define PNG_ARM_NEON_IMPLEMENTATION <font color='#979000'>2</font> |
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# endif <font color='#009900'>/* no GNUC support */</font> |
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# endif <font color='#009900'>/* __GNUC__ */</font> |
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# <font color='#0000FF'>else</font> <font color='#009900'>/* !defined __ARM_NEON__ */</font> |
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<font color='#009900'>/* The 'intrinsics' code simply won't compile without this -mfpu=neon: |
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*/</font> |
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# define PNG_ARM_NEON_IMPLEMENTATION <font color='#979000'>2</font> |
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# endif <font color='#009900'>/* __ARM_NEON__ */</font> |
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# endif <font color='#009900'>/* !defined PNG_ARM_NEON_IMPLEMENTATION */</font> |
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# ifndef PNG_ARM_NEON_IMPLEMENTATION |
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<font color='#009900'>/* Use the intrinsics code by default. */</font> |
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# define PNG_ARM_NEON_IMPLEMENTATION <font color='#979000'>1</font> |
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# endif |
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<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNG_ARM_NEON_OPT > 0 */</font> |
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<font color='#009900'>/* Is this a build of a DLL where compilation of the object modules requires |
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* different preprocessor settings to those required for a simple library? If |
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* so PNG_BUILD_DLL must be set. |
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* |
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* If libpng is used inside a DLL but that DLL does not export the libpng APIs |
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* PNG_BUILD_DLL must not be set. To avoid the code below kicking in build a |
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* static library of libpng then link the DLL against that. |
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*/</font> |
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<font color='#0000FF'>#ifndef</font> PNG_BUILD_DLL |
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# ifdef DLL_EXPORT |
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<font color='#009900'>/* This is set by libtool when files are compiled for a DLL; libtool |
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* always compiles twice, even on systems where it isn't necessary. Set |
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* PNG_BUILD_DLL in case it is necessary: |
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*/</font> |
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# define PNG_BUILD_DLL |
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# <font color='#0000FF'>else</font> |
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# ifdef _WINDLL |
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<font color='#009900'>/* This is set by the Microsoft Visual Studio IDE in projects that |
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* build a DLL. It can't easily be removed from those projects (it |
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* isn't visible in the Visual Studio UI) so it is a fairly reliable |
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* indication that PNG_IMPEXP needs to be set to the DLL export |
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* attributes. |
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*/</font> |
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# define PNG_BUILD_DLL |
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# <font color='#0000FF'>else</font> |
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# ifdef __DLL__ |
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<font color='#009900'>/* This is set by the Borland C system when compiling for a DLL |
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* (as above.) |
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*/</font> |
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# define PNG_BUILD_DLL |
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# <font color='#0000FF'>else</font> |
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<font color='#009900'>/* Add additional compiler cases here. */</font> |
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# endif |
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# endif |
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# endif |
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<font color='#0000FF'>#endif</font> <font color='#009900'>/* Setting PNG_BUILD_DLL if required */</font> |
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<font color='#009900'>/* See pngconf.h for more details: the builder of the library may set this on |
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* the command line to the right thing for the specific compilation system or it |
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* may be automagically set above (at present we know of no system where it does |
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* need to be set on the command line.) |
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* |
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* PNG_IMPEXP must be set here when building the library to prevent pngconf.h |
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* setting it to the "import" setting for a DLL build. |
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*/</font> |
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<font color='#0000FF'>#ifndef</font> PNG_IMPEXP |
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# ifdef PNG_BUILD_DLL |
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# define PNG_IMPEXP PNG_DLL_EXPORT |
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# <font color='#0000FF'>else</font> |
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<font color='#009900'>/* Not building a DLL, or the DLL doesn't require specific export |
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* definitions. |
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*/</font> |
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# define PNG_IMPEXP |
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# endif |
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<font color='#0000FF'>#endif</font> |
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<font color='#009900'>/* No warnings for private or deprecated functions in the build: */</font> |
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<font color='#0000FF'>#ifndef</font> PNG_DEPRECATED |
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# define PNG_DEPRECATED |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifndef</font> PNG_PRIVATE |
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# define PNG_PRIVATE |
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<font color='#0000FF'>#endif</font> |
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<font color='#009900'>/* Symbol preprocessing support. |
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* |
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* To enable listing global, but internal, symbols the following macros should |
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* always be used to declare an extern data or function object in this file. |
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*/</font> |
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<font color='#0000FF'>#ifndef</font> PNG_INTERNAL_DATA |
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# define <b><a name='PNG_INTERNAL_DATA'></a>PNG_INTERNAL_DATA</b><font face='Lucida Console'>(</font>type, name, array<font face='Lucida Console'>)</font> <font color='#0000FF'>extern</font> type name array |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifndef</font> PNG_INTERNAL_FUNCTION |
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# define <b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>type, name, args, attributes<font face='Lucida Console'>)</font>\ |
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<font color='#0000FF'>extern</font> <b><a name='PNG_FUNCTION'></a>PNG_FUNCTION</b><font face='Lucida Console'>(</font>type, name, args, PNG_EMPTY attributes<font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#endif</font> |
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<font color='#009900'>/* If floating or fixed point APIs are disabled they may still be compiled |
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* internally. To handle this make sure they are declared as the appropriate |
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* internal extern function (otherwise the symbol prefixing stuff won't work and |
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* the functions will be used without definitions.) |
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* |
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* NOTE: although all the API functions are declared here they are not all |
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* actually built! Because the declarations are still made it is necessary to |
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* fake out types that they depend on. |
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*/</font> |
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<font color='#0000FF'>#ifndef</font> PNG_FP_EXPORT |
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# ifndef PNG_FLOATING_POINT_SUPPORTED |
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# define <b><a name='PNG_FP_EXPORT'></a>PNG_FP_EXPORT</b><font face='Lucida Console'>(</font>ordinal, type, name, args<font face='Lucida Console'>)</font>\ |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>type, name, args, PNG_EMPTY<font face='Lucida Console'>)</font>; |
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# ifndef PNG_VERSION_INFO_ONLY |
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<font color='#0000FF'>typedef</font> <font color='#0000FF'>struct</font> png_incomplete png_double; |
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<font color='#0000FF'>typedef</font> png_double<font color='#5555FF'>*</font> png_doublep; |
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<font color='#0000FF'>typedef</font> <font color='#0000FF'>const</font> png_double<font color='#5555FF'>*</font> png_const_doublep; |
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<font color='#0000FF'>typedef</font> png_double<font color='#5555FF'>*</font><font color='#5555FF'>*</font> png_doublepp; |
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# endif |
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# endif |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifndef</font> PNG_FIXED_EXPORT |
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# ifndef PNG_FIXED_POINT_SUPPORTED |
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# define <b><a name='PNG_FIXED_EXPORT'></a>PNG_FIXED_EXPORT</b><font face='Lucida Console'>(</font>ordinal, type, name, args<font face='Lucida Console'>)</font>\ |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>type, name, args, PNG_EMPTY<font face='Lucida Console'>)</font>; |
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# endif |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='png.h.html'>png.h</a>" |
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<font color='#009900'>/* pngconf.h does not set PNG_DLL_EXPORT unless it is required, so: */</font> |
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<font color='#0000FF'>#ifndef</font> PNG_DLL_EXPORT |
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# define PNG_DLL_EXPORT |
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<font color='#0000FF'>#endif</font> |
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<font color='#009900'>/* SECURITY and SAFETY: |
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* |
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* By default libpng is built without any internal limits on image size, |
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* individual heap (png_malloc) allocations or the total amount of memory used. |
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* If PNG_SAFE_LIMITS_SUPPORTED is defined, however, the limits below are used |
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* (unless individually overridden). These limits are believed to be fairly |
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* safe, but builders of secure systems should verify the values against the |
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* real system capabilities. |
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*/</font> |
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<font color='#0000FF'>#ifdef</font> PNG_SAFE_LIMITS_SUPPORTED |
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<font color='#009900'>/* 'safe' limits */</font> |
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# ifndef PNG_USER_WIDTH_MAX |
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# define PNG_USER_WIDTH_MAX <font color='#979000'>1000000</font> |
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# endif |
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# ifndef PNG_USER_HEIGHT_MAX |
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# define PNG_USER_HEIGHT_MAX <font color='#979000'>1000000</font> |
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# endif |
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# ifndef PNG_USER_CHUNK_CACHE_MAX |
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# define PNG_USER_CHUNK_CACHE_MAX <font color='#979000'>128</font> |
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# endif |
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# ifndef PNG_USER_CHUNK_MALLOC_MAX |
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# define PNG_USER_CHUNK_MALLOC_MAX <font color='#979000'>8000000</font> |
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# endif |
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<font color='#0000FF'>#else</font> |
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<font color='#009900'>/* values for no limits */</font> |
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# ifndef PNG_USER_WIDTH_MAX |
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# define PNG_USER_WIDTH_MAX <font color='#979000'>0x7fffffff</font> |
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# endif |
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# ifndef PNG_USER_HEIGHT_MAX |
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# define PNG_USER_HEIGHT_MAX <font color='#979000'>0x7fffffff</font> |
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# endif |
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# ifndef PNG_USER_CHUNK_CACHE_MAX |
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# define PNG_USER_CHUNK_CACHE_MAX <font color='#979000'>0</font> |
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# endif |
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# ifndef PNG_USER_CHUNK_MALLOC_MAX |
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# define PNG_USER_CHUNK_MALLOC_MAX <font color='#979000'>0</font> |
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# endif |
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<font color='#0000FF'>#endif</font> |
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<font color='#009900'>/* Moved to pngpriv.h at libpng-1.5.0 */</font> |
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<font color='#009900'>/* NOTE: some of these may have been used in external applications as |
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* these definitions were exposed in pngconf.h prior to 1.5. |
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*/</font> |
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<font color='#009900'>/* If you are running on a machine where you cannot allocate more |
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* than 64K of memory at once, uncomment this. While libpng will not |
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* normally need that much memory in a chunk (unless you load up a very |
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* large file), zlib needs to know how big of a chunk it can use, and |
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* libpng thus makes sure to check any memory allocation to verify it |
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* will fit into memory. |
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* |
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* zlib provides 'MAXSEG_64K' which, if defined, indicates the |
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* same limit and pngconf.h (already included) sets the limit |
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* if certain operating systems are detected. |
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*/</font> |
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<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>MAXSEG_64K<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font color='#5555FF'>!</font>defined<font face='Lucida Console'>(</font>PNG_MAX_MALLOC_64K<font face='Lucida Console'>)</font> |
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# define PNG_MAX_MALLOC_64K |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifndef</font> PNG_UNUSED |
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<font color='#009900'>/* Unused formal parameter warnings are silenced using the following macro |
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* which is expected to have no bad effects on performance (optimizing |
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* compilers will probably remove it entirely). Note that if you replace |
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* it with something other than whitespace, you must include the terminating |
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* semicolon. |
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*/</font> |
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# define <b><a name='PNG_UNUSED'></a>PNG_UNUSED</b><font face='Lucida Console'>(</font>param<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font>param; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#009900'>/* Just a little check that someone hasn't tried to define something |
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* contradictory. |
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*/</font> |
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<font color='#0000FF'>#if</font> <font face='Lucida Console'>(</font>PNG_ZBUF_SIZE <font color='#5555FF'>></font> <font color='#979000'>65536</font>L<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> defined<font face='Lucida Console'>(</font>PNG_MAX_MALLOC_64K<font face='Lucida Console'>)</font> |
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# undef PNG_ZBUF_SIZE |
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# define PNG_ZBUF_SIZE <font color='#979000'>65536</font>L |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#009900'>/* If warnings or errors are turned off the code is disabled or redirected here. |
|
* From 1.5.4 functions have been added to allow very limited formatting of |
|
* error and warning messages - this code will also be disabled here. |
|
*/</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_WARNINGS_SUPPORTED |
|
# define <b><a name='PNG_WARNING_PARAMETERS'></a>PNG_WARNING_PARAMETERS</b><font face='Lucida Console'>(</font>p<font face='Lucida Console'>)</font> png_warning_parameters p; |
|
<font color='#0000FF'>#else</font> |
|
# define <b><a name='png_warning'></a>png_warning</b><font face='Lucida Console'>(</font>s1,s2<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>s1<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='png_chunk_warning'></a>png_chunk_warning</b><font face='Lucida Console'>(</font>s1,s2<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>s1<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='png_warning_parameter'></a>png_warning_parameter</b><font face='Lucida Console'>(</font>p,number,string<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font color='#979000'>0</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='png_warning_parameter_unsigned'></a>png_warning_parameter_unsigned</b><font face='Lucida Console'>(</font>p,number,format,value<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font color='#979000'>0</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='png_warning_parameter_signed'></a>png_warning_parameter_signed</b><font face='Lucida Console'>(</font>p,number,format,value<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font color='#979000'>0</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='png_formatted_warning'></a>png_formatted_warning</b><font face='Lucida Console'>(</font>pp,p,message<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>pp<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='PNG_WARNING_PARAMETERS'></a>PNG_WARNING_PARAMETERS</b><font face='Lucida Console'>(</font>p<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#endif</font> |
|
<font color='#0000FF'>#ifndef</font> PNG_ERROR_TEXT_SUPPORTED |
|
# define <b><a name='png_error'></a>png_error</b><font face='Lucida Console'>(</font>s1,s2<font face='Lucida Console'>)</font> <b><a name='png_err'></a>png_err</b><font face='Lucida Console'>(</font>s1<font face='Lucida Console'>)</font> |
|
# define <b><a name='png_chunk_error'></a>png_chunk_error</b><font face='Lucida Console'>(</font>s1,s2<font face='Lucida Console'>)</font> <b><a name='png_err'></a>png_err</b><font face='Lucida Console'>(</font>s1<font face='Lucida Console'>)</font> |
|
# define <b><a name='png_fixed_error'></a>png_fixed_error</b><font face='Lucida Console'>(</font>s1,s2<font face='Lucida Console'>)</font> <b><a name='png_err'></a>png_err</b><font face='Lucida Console'>(</font>s1<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* C allows up-casts from (void*) to any pointer and (const void*) to any |
|
* pointer to a const object. C++ regards this as a type error and requires an |
|
* explicit, static, cast and provides the static_cast<> rune to ensure that |
|
* const is not cast away. |
|
*/</font> |
|
<font color='#0000FF'>#ifdef</font> __cplusplus |
|
# define <b><a name='png_voidcast'></a>png_voidcast</b><font face='Lucida Console'>(</font>type, value<font face='Lucida Console'>)</font> <font color='#0000FF'>static_cast</font><font color='#5555FF'><</font>type<font color='#5555FF'>></font><font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font> |
|
# define <b><a name='png_constcast'></a>png_constcast</b><font face='Lucida Console'>(</font>type, value<font face='Lucida Console'>)</font> <font color='#0000FF'>const_cast</font><font color='#5555FF'><</font>type<font color='#5555FF'>></font><font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font> |
|
# define <b><a name='png_aligncast'></a>png_aligncast</b><font face='Lucida Console'>(</font>type, value<font face='Lucida Console'>)</font> \ |
|
<font color='#0000FF'>static_cast</font><font color='#5555FF'><</font>type<font color='#5555FF'>></font><font face='Lucida Console'>(</font><font color='#0000FF'>static_cast</font><font color='#5555FF'><</font><font color='#0000FF'><u>void</u></font><font color='#5555FF'>*</font><font color='#5555FF'>></font><font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='png_aligncastconst'></a>png_aligncastconst</b><font face='Lucida Console'>(</font>type, value<font face='Lucida Console'>)</font> \ |
|
<font color='#0000FF'>static_cast</font><font color='#5555FF'><</font>type<font color='#5555FF'>></font><font face='Lucida Console'>(</font><font color='#0000FF'>static_cast</font><font color='#5555FF'><</font><font color='#0000FF'>const</font> <font color='#0000FF'><u>void</u></font><font color='#5555FF'>*</font><font color='#5555FF'>></font><font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#else</font> |
|
# define <b><a name='png_voidcast'></a>png_voidcast</b><font face='Lucida Console'>(</font>type, value<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font> |
|
# define <b><a name='png_constcast'></a>png_constcast</b><font face='Lucida Console'>(</font>type, value<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>type<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='png_aligncast'></a>png_aligncast</b><font face='Lucida Console'>(</font>type, value<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
# define <b><a name='png_aligncastconst'></a>png_aligncastconst</b><font face='Lucida Console'>(</font>type, value<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> <font color='#0000FF'><u>void</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* __cplusplus */</font> |
|
|
|
<font color='#009900'>/* Some fixed point APIs are still required even if not exported because |
|
* they get used by the corresponding floating point APIs. This magic |
|
* deals with this: |
|
*/</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_FIXED_POINT_SUPPORTED |
|
# define PNGFAPI PNGAPI |
|
<font color='#0000FF'>#else</font> |
|
# define PNGFAPI <font color='#009900'>/* PRIVATE */</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifndef</font> PNG_VERSION_INFO_ONLY |
|
<font color='#009900'>/* Other defines specific to compilers can go here. Try to keep |
|
* them inside an appropriate ifdef/endif pair for portability. |
|
*/</font> |
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_FLOATING_POINT_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>\ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_FLOATING_ARITHMETIC_SUPPORTED<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* png.c requires the following ANSI-C constants if the conversion of |
|
* floating point to ASCII is implemented therein: |
|
* |
|
* DBL_DIG Maximum number of decimal digits (can be set to any constant) |
|
* DBL_MIN Smallest normalized fp number (can be set to an arbitrary value) |
|
* DBL_MAX Maximum floating point number (can be set to an arbitrary value) |
|
*/</font> |
|
# include <font color='#5555FF'><</font><font color='#0000FF'><u>float</u></font>.h<font color='#5555FF'>></font> |
|
|
|
# <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>__MWERKS__<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>macintosh<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>applec<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> \ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>THINK_C<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>__SC__<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>TARGET_OS_MAC<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* We need to check that <math.h> hasn't already been included earlier |
|
* as it seems it doesn't agree with <fp.h>, yet we should really use |
|
* <fp.h> if possible. |
|
*/</font> |
|
# <font color='#0000FF'>if</font> <font color='#5555FF'>!</font><b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>__MATH_H__<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font color='#5555FF'>!</font><b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>__MATH_H<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font color='#5555FF'>!</font><b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>__cmath__<font face='Lucida Console'>)</font> |
|
# include <font color='#5555FF'><</font>fp.h<font color='#5555FF'>></font> |
|
# endif |
|
# <font color='#0000FF'>else</font> |
|
# include <font color='#5555FF'><</font>math.h<font color='#5555FF'>></font> |
|
# endif |
|
# <font color='#0000FF'>if</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>_AMIGA<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>__SASC<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>_M68881<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* Amiga SAS/C: We must include builtin FPU functions when compiling using |
|
* MATH=68881 |
|
*/</font> |
|
# include <font color='#5555FF'><</font>m68881.h<font color='#5555FF'>></font> |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* This provides the non-ANSI (far) memory allocation routines. */</font> |
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>__TURBOC__<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> defined<font face='Lucida Console'>(</font>__MSDOS__<font face='Lucida Console'>)</font> |
|
# include <font color='#5555FF'><</font>mem.h<font color='#5555FF'>></font> |
|
# include <font color='#5555FF'><</font>alloc.h<font color='#5555FF'>></font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>WIN32<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>_Windows<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>_WINDOWS<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> \ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>_WIN32<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>__WIN32__<font face='Lucida Console'>)</font> |
|
# include <font color='#5555FF'><</font>windows.h<font color='#5555FF'>></font> <font color='#009900'>/* defines _WINDOWS_ macro */</font> |
|
<font color='#0000FF'>#endif</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNG_VERSION_INFO_ONLY */</font> |
|
|
|
<font color='#009900'>/* Moved here around 1.5.0beta36 from pngconf.h */</font> |
|
<font color='#009900'>/* Users may want to use these so they are not private. Any library |
|
* functions that are passed far data must be model-independent. |
|
*/</font> |
|
|
|
<font color='#009900'>/* Memory model/platform independent fns */</font> |
|
<font color='#0000FF'>#ifndef</font> PNG_ABORT |
|
# ifdef _WINDOWS_ |
|
# define <b><a name='PNG_ABORT'></a>PNG_ABORT</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <b><a name='ExitProcess'></a>ExitProcess</b><font face='Lucida Console'>(</font><font color='#979000'>0</font><font face='Lucida Console'>)</font> |
|
# <font color='#0000FF'>else</font> |
|
# define <b><a name='PNG_ABORT'></a>PNG_ABORT</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <b><a name='abort'></a>abort</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* These macros may need to be architecture dependent. */</font> |
|
<font color='#0000FF'>#define</font> PNG_ALIGN_NONE <font color='#979000'>0</font> <font color='#009900'>/* do not use data alignment */</font> |
|
<font color='#0000FF'>#define</font> PNG_ALIGN_ALWAYS <font color='#979000'>1</font> <font color='#009900'>/* assume unaligned accesses are OK */</font> |
|
<font color='#0000FF'>#ifdef</font> offsetof |
|
# define PNG_ALIGN_OFFSET <font color='#979000'>2</font> <font color='#009900'>/* use offsetof to determine alignment */</font> |
|
<font color='#0000FF'>#else</font> |
|
# define PNG_ALIGN_OFFSET <font color='#5555FF'>-</font><font color='#979000'>1</font> <font color='#009900'>/* prevent the use of this */</font> |
|
<font color='#0000FF'>#endif</font> |
|
<font color='#0000FF'>#define</font> PNG_ALIGN_SIZE <font color='#979000'>3</font> <font color='#009900'>/* use sizeof to determine alignment */</font> |
|
|
|
<font color='#0000FF'>#ifndef</font> PNG_ALIGN_TYPE |
|
<font color='#009900'>/* Default to using aligned access optimizations and requiring alignment to a |
|
* multiple of the data type size. Override in a compiler specific fashion |
|
* if necessary by inserting tests here: |
|
*/</font> |
|
# define PNG_ALIGN_TYPE PNG_ALIGN_SIZE |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> PNG_ALIGN_TYPE <font color='#5555FF'>=</font><font color='#5555FF'>=</font> PNG_ALIGN_SIZE |
|
<font color='#009900'>/* This is used because in some compiler implementations non-aligned |
|
* structure members are supported, so the offsetof approach below fails. |
|
* Set PNG_ALIGN_SIZE=0 for compiler combinations where unaligned access |
|
* is good for performance. Do not do this unless you have tested the result |
|
* and understand it. |
|
*/</font> |
|
# define <b><a name='png_alignof'></a>png_alignof</b><font face='Lucida Console'>(</font>type<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#0000FF'>sizeof</font> <font face='Lucida Console'>(</font>type<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#else</font> |
|
# <font color='#0000FF'>if</font> PNG_ALIGN_TYPE <font color='#5555FF'>=</font><font color='#5555FF'>=</font> PNG_ALIGN_OFFSET |
|
# define <b><a name='png_alignof'></a>png_alignof</b><font face='Lucida Console'>(</font>type<font face='Lucida Console'>)</font> <b><a name='offsetof'></a>offsetof</b><font face='Lucida Console'>(</font><font color='#0000FF'>struct</font><b>{</b><font color='#0000FF'><u>char</u></font> c; type t;<b>}</b>, t<font face='Lucida Console'>)</font> |
|
# <font color='#0000FF'>else</font> |
|
# <font color='#0000FF'>if</font> PNG_ALIGN_TYPE <font color='#5555FF'>=</font><font color='#5555FF'>=</font> PNG_ALIGN_ALWAYS |
|
# define <b><a name='png_alignof'></a>png_alignof</b><font face='Lucida Console'>(</font>type<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#979000'>1</font><font face='Lucida Console'>)</font> |
|
# endif |
|
<font color='#009900'>/* Else leave png_alignof undefined to prevent use thereof */</font> |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* This implicitly assumes alignment is always to a power of 2. */</font> |
|
<font color='#0000FF'>#ifdef</font> png_alignof |
|
# define <b><a name='png_isaligned'></a>png_isaligned</b><font face='Lucida Console'>(</font>ptr, type<font face='Lucida Console'>)</font>\ |
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font>ptr<font color='#5555FF'>-</font><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font color='#979000'>0</font><font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> <font face='Lucida Console'>(</font><font color='#BB00BB'>png_alignof</font><font face='Lucida Console'>(</font>type<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#979000'>1</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#else</font> |
|
# define <b><a name='png_isaligned'></a>png_isaligned</b><font face='Lucida Console'>(</font>ptr, type<font face='Lucida Console'>)</font> <font color='#979000'>0</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* End of memory model/platform independent support */</font> |
|
<font color='#009900'>/* End of 1.5.0beta36 move from pngconf.h */</font> |
|
|
|
<font color='#009900'>/* CONSTANTS and UTILITY MACROS |
|
* These are used internally by libpng and not exposed in the API |
|
*/</font> |
|
|
|
<font color='#009900'>/* Various modes of operation. Note that after an init, mode is set to |
|
* zero automatically when the structure is created. Three of these |
|
* are defined in png.h because they need to be visible to applications |
|
* that call png_set_unknown_chunk(). |
|
*/</font> |
|
<font color='#009900'>/* #define PNG_HAVE_IHDR 0x01 (defined in png.h) */</font> |
|
<font color='#009900'>/* #define PNG_HAVE_PLTE 0x02 (defined in png.h) */</font> |
|
<font color='#0000FF'>#define</font> PNG_HAVE_IDAT <font color='#979000'>0x04</font> |
|
<font color='#009900'>/* #define PNG_AFTER_IDAT 0x08 (defined in png.h) */</font> |
|
<font color='#0000FF'>#define</font> PNG_HAVE_IEND <font color='#979000'>0x10</font> |
|
<font color='#009900'>/* 0x20 (unused) */</font> |
|
<font color='#009900'>/* 0x40 (unused) */</font> |
|
<font color='#009900'>/* 0x80 (unused) */</font> |
|
<font color='#0000FF'>#define</font> PNG_HAVE_CHUNK_HEADER <font color='#979000'>0x100</font> |
|
<font color='#0000FF'>#define</font> PNG_WROTE_tIME <font color='#979000'>0x200</font> |
|
<font color='#0000FF'>#define</font> PNG_WROTE_INFO_BEFORE_PLTE <font color='#979000'>0x400</font> |
|
<font color='#0000FF'>#define</font> PNG_BACKGROUND_IS_GRAY <font color='#979000'>0x800</font> |
|
<font color='#0000FF'>#define</font> PNG_HAVE_PNG_SIGNATURE <font color='#979000'>0x1000</font> |
|
<font color='#0000FF'>#define</font> PNG_HAVE_CHUNK_AFTER_IDAT <font color='#979000'>0x2000</font> <font color='#009900'>/* Have another chunk after IDAT */</font> |
|
<font color='#009900'>/* 0x4000 (unused) */</font> |
|
<font color='#0000FF'>#define</font> PNG_IS_READ_STRUCT <font color='#979000'>0x8000</font> <font color='#009900'>/* Else is a write struct */</font> |
|
|
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<font color='#009900'>/* Flags for the transformations the PNG library does on the image data */</font> |
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<font color='#0000FF'>#define</font> PNG_BGR <font color='#979000'>0x0001</font> |
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<font color='#0000FF'>#define</font> PNG_INTERLACE <font color='#979000'>0x0002</font> |
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<font color='#0000FF'>#define</font> PNG_PACK <font color='#979000'>0x0004</font> |
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<font color='#0000FF'>#define</font> PNG_SHIFT <font color='#979000'>0x0008</font> |
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<font color='#0000FF'>#define</font> PNG_SWAP_BYTES <font color='#979000'>0x0010</font> |
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<font color='#0000FF'>#define</font> PNG_INVERT_MONO <font color='#979000'>0x0020</font> |
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<font color='#0000FF'>#define</font> PNG_QUANTIZE <font color='#979000'>0x0040</font> |
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<font color='#0000FF'>#define</font> PNG_COMPOSE <font color='#979000'>0x0080</font> <font color='#009900'>/* Was PNG_BACKGROUND */</font> |
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<font color='#0000FF'>#define</font> PNG_BACKGROUND_EXPAND <font color='#979000'>0x0100</font> |
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<font color='#0000FF'>#define</font> PNG_EXPAND_16 <font color='#979000'>0x0200</font> <font color='#009900'>/* Added to libpng 1.5.2 */</font> |
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<font color='#0000FF'>#define</font> PNG_16_TO_8 <font color='#979000'>0x0400</font> <font color='#009900'>/* Becomes 'chop' in 1.5.4 */</font> |
|
<font color='#0000FF'>#define</font> PNG_RGBA <font color='#979000'>0x0800</font> |
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<font color='#0000FF'>#define</font> PNG_EXPAND <font color='#979000'>0x1000</font> |
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<font color='#0000FF'>#define</font> PNG_GAMMA <font color='#979000'>0x2000</font> |
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<font color='#0000FF'>#define</font> PNG_GRAY_TO_RGB <font color='#979000'>0x4000</font> |
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<font color='#0000FF'>#define</font> PNG_FILLER <font color='#979000'>0x8000</font> |
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<font color='#0000FF'>#define</font> PNG_PACKSWAP <font color='#979000'>0x10000</font> |
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<font color='#0000FF'>#define</font> PNG_SWAP_ALPHA <font color='#979000'>0x20000</font> |
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<font color='#0000FF'>#define</font> PNG_STRIP_ALPHA <font color='#979000'>0x40000</font> |
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<font color='#0000FF'>#define</font> PNG_INVERT_ALPHA <font color='#979000'>0x80000</font> |
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<font color='#0000FF'>#define</font> PNG_USER_TRANSFORM <font color='#979000'>0x100000</font> |
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<font color='#0000FF'>#define</font> PNG_RGB_TO_GRAY_ERR <font color='#979000'>0x200000</font> |
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<font color='#0000FF'>#define</font> PNG_RGB_TO_GRAY_WARN <font color='#979000'>0x400000</font> |
|
<font color='#0000FF'>#define</font> PNG_RGB_TO_GRAY <font color='#979000'>0x600000</font> <font color='#009900'>/* two bits, RGB_TO_GRAY_ERR|WARN */</font> |
|
<font color='#0000FF'>#define</font> PNG_ENCODE_ALPHA <font color='#979000'>0x800000</font> <font color='#009900'>/* Added to libpng-1.5.4 */</font> |
|
<font color='#0000FF'>#define</font> PNG_ADD_ALPHA <font color='#979000'>0x1000000</font> <font color='#009900'>/* Added to libpng-1.2.7 */</font> |
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<font color='#0000FF'>#define</font> PNG_EXPAND_tRNS <font color='#979000'>0x2000000</font> <font color='#009900'>/* Added to libpng-1.2.9 */</font> |
|
<font color='#0000FF'>#define</font> PNG_SCALE_16_TO_8 <font color='#979000'>0x4000000</font> <font color='#009900'>/* Added to libpng-1.5.4 */</font> |
|
<font color='#009900'>/* 0x8000000 unused */</font> |
|
<font color='#009900'>/* 0x10000000 unused */</font> |
|
<font color='#009900'>/* 0x20000000 unused */</font> |
|
<font color='#009900'>/* 0x40000000 unused */</font> |
|
<font color='#009900'>/* Flags for png_create_struct */</font> |
|
<font color='#0000FF'>#define</font> PNG_STRUCT_PNG <font color='#979000'>0x0001</font> |
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<font color='#0000FF'>#define</font> PNG_STRUCT_INFO <font color='#979000'>0x0002</font> |
|
|
|
<font color='#009900'>/* Scaling factor for filter heuristic weighting calculations */</font> |
|
<font color='#0000FF'>#define</font> PNG_WEIGHT_FACTOR <font face='Lucida Console'>(</font><font color='#979000'>1</font><font color='#5555FF'><</font><font color='#5555FF'><</font><font face='Lucida Console'>(</font>PNG_WEIGHT_SHIFT<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> PNG_COST_FACTOR <font face='Lucida Console'>(</font><font color='#979000'>1</font><font color='#5555FF'><</font><font color='#5555FF'><</font><font face='Lucida Console'>(</font>PNG_COST_SHIFT<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* Flags for the png_ptr->flags rather than declaring a byte for each one */</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_ZLIB_CUSTOM_STRATEGY <font color='#979000'>0x0001</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_ZSTREAM_INITIALIZED <font color='#979000'>0x0002</font> <font color='#009900'>/* Added to libpng-1.6.0 */</font> |
|
<font color='#009900'>/* 0x0004 unused */</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_ZSTREAM_ENDED <font color='#979000'>0x0008</font> <font color='#009900'>/* Added to libpng-1.6.0 */</font> |
|
<font color='#009900'>/* 0x0010 unused */</font> |
|
<font color='#009900'>/* 0x0020 unused */</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_ROW_INIT <font color='#979000'>0x0040</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_FILLER_AFTER <font color='#979000'>0x0080</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_CRC_ANCILLARY_USE <font color='#979000'>0x0100</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_CRC_ANCILLARY_NOWARN <font color='#979000'>0x0200</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_CRC_CRITICAL_USE <font color='#979000'>0x0400</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_CRC_CRITICAL_IGNORE <font color='#979000'>0x0800</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_ASSUME_sRGB <font color='#979000'>0x1000</font> <font color='#009900'>/* Added to libpng-1.5.4 */</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_OPTIMIZE_ALPHA <font color='#979000'>0x2000</font> <font color='#009900'>/* Added to libpng-1.5.4 */</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_DETECT_UNINITIALIZED <font color='#979000'>0x4000</font> <font color='#009900'>/* Added to libpng-1.5.4 */</font> |
|
<font color='#009900'>/* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000 */</font> |
|
<font color='#009900'>/* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000 */</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_LIBRARY_MISMATCH <font color='#979000'>0x20000</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_STRIP_ERROR_NUMBERS <font color='#979000'>0x40000</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_STRIP_ERROR_TEXT <font color='#979000'>0x80000</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_BENIGN_ERRORS_WARN <font color='#979000'>0x100000</font> <font color='#009900'>/* Added to libpng-1.4.0 */</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_APP_WARNINGS_WARN <font color='#979000'>0x200000</font> <font color='#009900'>/* Added to libpng-1.6.0 */</font> |
|
<font color='#0000FF'>#define</font> PNG_FLAG_APP_ERRORS_WARN <font color='#979000'>0x400000</font> <font color='#009900'>/* Added to libpng-1.6.0 */</font> |
|
<font color='#009900'>/* 0x800000 unused */</font> |
|
<font color='#009900'>/* 0x1000000 unused */</font> |
|
<font color='#009900'>/* 0x2000000 unused */</font> |
|
<font color='#009900'>/* 0x4000000 unused */</font> |
|
<font color='#009900'>/* 0x8000000 unused */</font> |
|
<font color='#009900'>/* 0x10000000 unused */</font> |
|
<font color='#009900'>/* 0x20000000 unused */</font> |
|
<font color='#009900'>/* 0x40000000 unused */</font> |
|
|
|
<font color='#0000FF'>#define</font> PNG_FLAG_CRC_ANCILLARY_MASK <font face='Lucida Console'>(</font>PNG_FLAG_CRC_ANCILLARY_USE <font color='#5555FF'>|</font> \ |
|
PNG_FLAG_CRC_ANCILLARY_NOWARN<font face='Lucida Console'>)</font> |
|
|
|
<font color='#0000FF'>#define</font> PNG_FLAG_CRC_CRITICAL_MASK <font face='Lucida Console'>(</font>PNG_FLAG_CRC_CRITICAL_USE <font color='#5555FF'>|</font> \ |
|
PNG_FLAG_CRC_CRITICAL_IGNORE<font face='Lucida Console'>)</font> |
|
|
|
<font color='#0000FF'>#define</font> PNG_FLAG_CRC_MASK <font face='Lucida Console'>(</font>PNG_FLAG_CRC_ANCILLARY_MASK <font color='#5555FF'>|</font> \ |
|
PNG_FLAG_CRC_CRITICAL_MASK<font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* Save typing and make code easier to understand */</font> |
|
|
|
<font color='#0000FF'>#define</font> PNG_COLOR_DIST<font face='Lucida Console'>(</font>c1, c2<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>abs<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c1<font face='Lucida Console'>)</font>.red<font face='Lucida Console'>)</font> <font color='#5555FF'>-</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c2<font face='Lucida Console'>)</font>.red<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> \ |
|
<font color='#BB00BB'>abs</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c1<font face='Lucida Console'>)</font>.green<font face='Lucida Console'>)</font> <font color='#5555FF'>-</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c2<font face='Lucida Console'>)</font>.green<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> \ |
|
<font color='#BB00BB'>abs</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c1<font face='Lucida Console'>)</font>.blue<font face='Lucida Console'>)</font> <font color='#5555FF'>-</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c2<font face='Lucida Console'>)</font>.blue<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* Added to libpng-1.6.0: scale a 16-bit value in the range 0..65535 to 0..255 |
|
* by dividing by 257 *with rounding*. This macro is exact for the given range. |
|
* See the discourse in pngrtran.c png_do_scale_16_to_8. The values in the |
|
* macro were established by experiment (modifying the added value). The macro |
|
* has a second variant that takes a value already scaled by 255 and divides by |
|
* 65535 - this has a maximum error of .502. Over the range 0..65535*65535 it |
|
* only gives off-by-one errors and only for 0.5% (1 in 200) of the values. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_DIV65535<font face='Lucida Console'>(</font>v24<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>v24<font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> <font color='#979000'>32895</font><font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>16</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> PNG_DIV257<font face='Lucida Console'>(</font>v16<font face='Lucida Console'>)</font> PNG_DIV65535<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_uint_32<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>v16<font face='Lucida Console'>)</font> <font color='#5555FF'>*</font> <font color='#979000'>255</font><font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* Added to libpng-1.2.6 JB */</font> |
|
<font color='#0000FF'>#define</font> PNG_ROWBYTES<font face='Lucida Console'>(</font>pixel_bits, width<font face='Lucida Console'>)</font> \ |
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<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>pixel_bits<font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font color='#979000'>8</font> ? \ |
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_size_t<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>width<font face='Lucida Console'>)</font> <font color='#5555FF'>*</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_size_t<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>pixel_bits<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>3</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> : \ |
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_size_t<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>width<font face='Lucida Console'>)</font> <font color='#5555FF'>*</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_size_t<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>pixel_bits<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>+</font> <font color='#979000'>7</font><font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>3</font><font face='Lucida Console'>)</font> <font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* PNG_OUT_OF_RANGE returns true if value is outside the range |
|
* ideal-delta..ideal+delta. Each argument is evaluated twice. |
|
* "ideal" and "delta" should be constants, normally simple |
|
* integers, "value" a variable. Added to libpng-1.2.6 JB |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_OUT_OF_RANGE<font face='Lucida Console'>(</font>value, ideal, delta<font face='Lucida Console'>)</font> \ |
|
<font face='Lucida Console'>(</font> <font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font> <font color='#5555FF'><</font> <font face='Lucida Console'>(</font>ideal<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font face='Lucida Console'>(</font>delta<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <font face='Lucida Console'>(</font>value<font face='Lucida Console'>)</font> <font color='#5555FF'>></font> <font face='Lucida Console'>(</font>ideal<font face='Lucida Console'>)</font><font color='#5555FF'>+</font><font face='Lucida Console'>(</font>delta<font face='Lucida Console'>)</font> <font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* Conversions between fixed and floating point, only defined if |
|
* required (to make sure the code doesn't accidentally use float |
|
* when it is supposedly disabled.) |
|
*/</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_FLOATING_POINT_SUPPORTED |
|
<font color='#009900'>/* The floating point conversion can't overflow, though it can and |
|
* does lose accuracy relative to the original fixed point value. |
|
* In practice this doesn't matter because png_fixed_point only |
|
* stores numbers with very low precision. The png_ptr and s |
|
* arguments are unused by default but are there in case error |
|
* checking becomes a requirement. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> png_float<font face='Lucida Console'>(</font>png_ptr, fixed, s<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>.<font color='#979000'>00001</font> <font color='#5555FF'>*</font> <font face='Lucida Console'>(</font>fixed<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* The fixed point conversion performs range checking and evaluates |
|
* its argument multiple times, so must be used with care. The |
|
* range checking uses the PNG specification values for a signed |
|
* 32 bit fixed point value except that the values are deliberately |
|
* rounded-to-zero to an integral value - 21474 (21474.83 is roughly |
|
* (2^31-1) * 100000). 's' is a string that describes the value being |
|
* converted. |
|
* |
|
* NOTE: this macro will raise a png_error if the range check fails, |
|
* therefore it is normally only appropriate to use this on values |
|
* that come from API calls or other sources where an out of range |
|
* error indicates a programming error, not a data error! |
|
* |
|
* NOTE: by default this is off - the macro is not used - because the |
|
* function call saves a lot of code. |
|
*/</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_FIXED_POINT_MACRO_SUPPORTED |
|
<font color='#0000FF'>#define</font> png_fixed<font face='Lucida Console'>(</font>png_ptr, fp, s<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>fp<font face='Lucida Console'>)</font> <font color='#5555FF'><</font><font color='#5555FF'>=</font> <font color='#979000'>21474</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font face='Lucida Console'>(</font>fp<font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font color='#5555FF'>-</font><font color='#979000'>21474</font> ?\ |
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_fixed_point<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font color='#979000'>100000</font> <font color='#5555FF'>*</font> <font face='Lucida Console'>(</font>fp<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> : <font face='Lucida Console'>(</font>png_fixed_error<font face='Lucida Console'>(</font>png_ptr, s<font face='Lucida Console'>)</font>,<font color='#979000'>0</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#endif</font> |
|
<font color='#009900'>/* else the corresponding function is defined below, inside the scope of the |
|
* cplusplus test. |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Constants for known chunk types. If you need to add a chunk, define the name |
|
* here. For historical reasons these constants have the form png_<name>; i.e. |
|
* the prefix is lower case. Please use decimal values as the parameters to |
|
* match the ISO PNG specification and to avoid relying on the C locale |
|
* interpretation of character values. |
|
* |
|
* Prior to 1.5.6 these constants were strings, as of 1.5.6 png_uint_32 values |
|
* are computed and a new macro (PNG_STRING_FROM_CHUNK) added to allow a string |
|
* to be generated if required. |
|
* |
|
* PNG_32b correctly produces a value shifted by up to 24 bits, even on |
|
* architectures where (int) is only 16 bits. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_32b<font face='Lucida Console'>(</font>b,s<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_uint_32<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>b<font face='Lucida Console'>)</font> <font color='#5555FF'><</font><font color='#5555FF'><</font> <font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> PNG_U32<font face='Lucida Console'>(</font>b1,b2,b3,b4<font face='Lucida Console'>)</font> \ |
|
<font face='Lucida Console'>(</font>PNG_32b<font face='Lucida Console'>(</font>b1,<font color='#979000'>24</font><font face='Lucida Console'>)</font> <font color='#5555FF'>|</font> PNG_32b<font face='Lucida Console'>(</font>b2,<font color='#979000'>16</font><font face='Lucida Console'>)</font> <font color='#5555FF'>|</font> PNG_32b<font face='Lucida Console'>(</font>b3,<font color='#979000'>8</font><font face='Lucida Console'>)</font> <font color='#5555FF'>|</font> PNG_32b<font face='Lucida Console'>(</font>b4,<font color='#979000'>0</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* Constants for known chunk types. |
|
* |
|
* MAINTAINERS: If you need to add a chunk, define the name here. |
|
* For historical reasons these constants have the form png_<name>; i.e. |
|
* the prefix is lower case. Please use decimal values as the parameters to |
|
* match the ISO PNG specification and to avoid relying on the C locale |
|
* interpretation of character values. Please keep the list sorted. |
|
* |
|
* Notice that PNG_U32 is used to define a 32-bit value for the 4 byte chunk |
|
* type. In fact the specification does not express chunk types this way, |
|
* however using a 32-bit value means that the chunk type can be read from the |
|
* stream using exactly the same code as used for a 32-bit unsigned value and |
|
* can be examined far more efficiently (using one arithmetic compare). |
|
* |
|
* Prior to 1.5.6 the chunk type constants were expressed as C strings. The |
|
* libpng API still uses strings for 'unknown' chunks and a macro, |
|
* PNG_STRING_FROM_CHUNK, allows a string to be generated if required. Notice |
|
* that for portable code numeric values must still be used; the string "IHDR" |
|
* is not portable and neither is PNG_U32('I', 'H', 'D', 'R'). |
|
* |
|
* In 1.7.0 the definitions will be made public in png.h to avoid having to |
|
* duplicate the same definitions in application code. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> png_IDAT PNG_U32<font face='Lucida Console'>(</font> <font color='#979000'>73</font>, <font color='#979000'>68</font>, <font color='#979000'>65</font>, <font color='#979000'>84</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_IEND PNG_U32<font face='Lucida Console'>(</font> <font color='#979000'>73</font>, <font color='#979000'>69</font>, <font color='#979000'>78</font>, <font color='#979000'>68</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_IHDR PNG_U32<font face='Lucida Console'>(</font> <font color='#979000'>73</font>, <font color='#979000'>72</font>, <font color='#979000'>68</font>, <font color='#979000'>82</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_PLTE PNG_U32<font face='Lucida Console'>(</font> <font color='#979000'>80</font>, <font color='#979000'>76</font>, <font color='#979000'>84</font>, <font color='#979000'>69</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_bKGD PNG_U32<font face='Lucida Console'>(</font> <font color='#979000'>98</font>, <font color='#979000'>75</font>, <font color='#979000'>71</font>, <font color='#979000'>68</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_cHRM PNG_U32<font face='Lucida Console'>(</font> <font color='#979000'>99</font>, <font color='#979000'>72</font>, <font color='#979000'>82</font>, <font color='#979000'>77</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_fRAc PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>102</font>, <font color='#979000'>82</font>, <font color='#979000'>65</font>, <font color='#979000'>99</font><font face='Lucida Console'>)</font> <font color='#009900'>/* registered, not defined */</font> |
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<font color='#0000FF'>#define</font> png_gAMA PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>103</font>, <font color='#979000'>65</font>, <font color='#979000'>77</font>, <font color='#979000'>65</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_gIFg PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>103</font>, <font color='#979000'>73</font>, <font color='#979000'>70</font>, <font color='#979000'>103</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_gIFt PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>103</font>, <font color='#979000'>73</font>, <font color='#979000'>70</font>, <font color='#979000'>116</font><font face='Lucida Console'>)</font> <font color='#009900'>/* deprecated */</font> |
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<font color='#0000FF'>#define</font> png_gIFx PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>103</font>, <font color='#979000'>73</font>, <font color='#979000'>70</font>, <font color='#979000'>120</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_hIST PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>104</font>, <font color='#979000'>73</font>, <font color='#979000'>83</font>, <font color='#979000'>84</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_iCCP PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>105</font>, <font color='#979000'>67</font>, <font color='#979000'>67</font>, <font color='#979000'>80</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_iTXt PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>105</font>, <font color='#979000'>84</font>, <font color='#979000'>88</font>, <font color='#979000'>116</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_oFFs PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>111</font>, <font color='#979000'>70</font>, <font color='#979000'>70</font>, <font color='#979000'>115</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_pCAL PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>112</font>, <font color='#979000'>67</font>, <font color='#979000'>65</font>, <font color='#979000'>76</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_pHYs PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>112</font>, <font color='#979000'>72</font>, <font color='#979000'>89</font>, <font color='#979000'>115</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_sBIT PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>115</font>, <font color='#979000'>66</font>, <font color='#979000'>73</font>, <font color='#979000'>84</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_sCAL PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>115</font>, <font color='#979000'>67</font>, <font color='#979000'>65</font>, <font color='#979000'>76</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> png_sPLT PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>115</font>, <font color='#979000'>80</font>, <font color='#979000'>76</font>, <font color='#979000'>84</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_sRGB PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>115</font>, <font color='#979000'>82</font>, <font color='#979000'>71</font>, <font color='#979000'>66</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> png_sTER PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>115</font>, <font color='#979000'>84</font>, <font color='#979000'>69</font>, <font color='#979000'>82</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> png_tEXt PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>116</font>, <font color='#979000'>69</font>, <font color='#979000'>88</font>, <font color='#979000'>116</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> png_tIME PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>116</font>, <font color='#979000'>73</font>, <font color='#979000'>77</font>, <font color='#979000'>69</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> png_tRNS PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>116</font>, <font color='#979000'>82</font>, <font color='#979000'>78</font>, <font color='#979000'>83</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> png_zTXt PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>122</font>, <font color='#979000'>84</font>, <font color='#979000'>88</font>, <font color='#979000'>116</font><font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* The following will work on (signed char*) strings, whereas the get_uint_32 |
|
* macro will fail on top-bit-set values because of the sign extension. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_CHUNK_FROM_STRING<font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font>\ |
|
PNG_U32<font face='Lucida Console'>(</font><font color='#979000'>0xff</font><font color='#5555FF'>&</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font>[<font color='#979000'>0</font>], <font color='#979000'>0xff</font><font color='#5555FF'>&</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font>[<font color='#979000'>1</font>], <font color='#979000'>0xff</font><font color='#5555FF'>&</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font>[<font color='#979000'>2</font>], <font color='#979000'>0xff</font><font color='#5555FF'>&</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font>[<font color='#979000'>3</font>]<font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* This uses (char), not (png_byte) to avoid warnings on systems where (char) is |
|
* signed and the argument is a (char[]) This macro will fail miserably on |
|
* systems where (char) is more than 8 bits. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_STRING_FROM_CHUNK<font face='Lucida Console'>(</font>s,c<font face='Lucida Console'>)</font>\ |
|
<font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>[<font color='#979000'>0</font>]<font color='#5555FF'>=</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font><font color='#5555FF'>></font><font color='#5555FF'>></font><font color='#979000'>24</font><font face='Lucida Console'>)</font>, <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>[<font color='#979000'>1</font>]<font color='#5555FF'>=</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font><font color='#5555FF'>></font><font color='#5555FF'>></font><font color='#979000'>16</font><font face='Lucida Console'>)</font>,\ |
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>[<font color='#979000'>2</font>]<font color='#5555FF'>=</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font><font color='#5555FF'>></font><font color='#5555FF'>></font><font color='#979000'>8</font><font face='Lucida Console'>)</font>, <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>[<font color='#979000'>3</font>]<font color='#5555FF'>=</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
|
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<font color='#009900'>/* Do the same but terminate with a null character. */</font> |
|
<font color='#0000FF'>#define</font> PNG_CSTRING_FROM_CHUNK<font face='Lucida Console'>(</font>s,c<font face='Lucida Console'>)</font>\ |
|
<font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>PNG_STRING_FROM_CHUNK<font face='Lucida Console'>(</font>s,c<font face='Lucida Console'>)</font>, <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>s<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>[<font color='#979000'>4</font>] <font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* Test on flag values as defined in the spec (section 5.4): */</font> |
|
<font color='#0000FF'>#define</font> PNG_CHUNK_ANCILLARY<font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#979000'>1</font> <font color='#5555FF'>&</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>29</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> PNG_CHUNK_CRITICAL<font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#5555FF'>!</font>PNG_CHUNK_ANCILLARY<font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> PNG_CHUNK_PRIVATE<font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#979000'>1</font> <font color='#5555FF'>&</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>21</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> PNG_CHUNK_RESERVED<font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#979000'>1</font> <font color='#5555FF'>&</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>13</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
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<font color='#0000FF'>#define</font> PNG_CHUNK_SAFE_TO_COPY<font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#979000'>1</font> <font color='#5555FF'>&</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>c<font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>5</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
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|
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<font color='#009900'>/* Gamma values (new at libpng-1.5.4): */</font> |
|
<font color='#0000FF'>#define</font> PNG_GAMMA_MAC_OLD <font color='#979000'>151724</font> <font color='#009900'>/* Assume '1.8' is really 2.2/1.45! */</font> |
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<font color='#0000FF'>#define</font> PNG_GAMMA_MAC_INVERSE <font color='#979000'>65909</font> |
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<font color='#0000FF'>#define</font> PNG_GAMMA_sRGB_INVERSE <font color='#979000'>45455</font> |
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|
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<font color='#009900'>/* Almost everything below is C specific; the #defines above can be used in |
|
* non-C code (so long as it is C-preprocessed) the rest of this stuff cannot. |
|
*/</font> |
|
<font color='#0000FF'>#ifndef</font> PNG_VERSION_INFO_ONLY |
|
|
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='pngstruct.h.html'>pngstruct.h</a>" |
|
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='pnginfo.h.html'>pnginfo.h</a>" |
|
|
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<font color='#009900'>/* Validate the include paths - the include path used to generate pnglibconf.h |
|
* must match that used in the build, or we must be using pnglibconf.h.prebuilt: |
|
*/</font> |
|
<font color='#0000FF'>#if</font> PNG_ZLIB_VERNUM <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> PNG_ZLIB_VERNUM <font color='#5555FF'>!</font><font color='#5555FF'>=</font> ZLIB_VERNUM |
|
# error ZLIB_VERNUM <font color='#5555FF'>!</font><font color='#5555FF'>=</font> PNG_ZLIB_VERNUM \ |
|
"<font color='#CC0000'>-I (include path) error: see the notes in pngpriv.h</font>" |
|
<font color='#009900'>/* This means that when pnglibconf.h was built the copy of zlib.h that it |
|
* used is not the same as the one being used here. Because the build of |
|
* libpng makes decisions to use inflateInit2 and inflateReset2 based on the |
|
* zlib version number and because this affects handling of certain broken |
|
* PNG files the -I directives must match. |
|
* |
|
* The most likely explanation is that you passed a -I in CFLAGS, this will |
|
* not work; all the preprocessor directories and in particular all the -I |
|
* directives must be in CPPFLAGS. |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* This is used for 16 bit gamma tables -- only the top level pointers are |
|
* const; this could be changed: |
|
*/</font> |
|
<font color='#0000FF'>typedef</font> <font color='#0000FF'>const</font> png_uint_16p <font color='#5555FF'>*</font> png_const_uint_16pp; |
|
|
|
<font color='#009900'>/* Added to libpng-1.5.7: sRGB conversion tables */</font> |
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_SIMPLIFIED_READ_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>\ |
|
defined<font face='Lucida Console'>(</font>PNG_SIMPLIFIED_WRITE_SUPPORTED<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_SIMPLIFIED_READ_SUPPORTED |
|
PNG_INTERNAL_DATA<font face='Lucida Console'>(</font><font color='#0000FF'>const</font> png_uint_16, png_sRGB_table, [<font color='#979000'>256</font>]<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Convert from an sRGB encoded value 0..255 to a 16-bit linear value, |
|
* 0..65535. This table gives the closest 16-bit answers (no errors). |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
PNG_INTERNAL_DATA<font face='Lucida Console'>(</font><font color='#0000FF'>const</font> png_uint_16, png_sRGB_base, [<font color='#979000'>512</font>]<font face='Lucida Console'>)</font>; |
|
PNG_INTERNAL_DATA<font face='Lucida Console'>(</font><font color='#0000FF'>const</font> png_byte, png_sRGB_delta, [<font color='#979000'>512</font>]<font face='Lucida Console'>)</font>; |
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|
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<font color='#0000FF'>#define</font> PNG_sRGB_FROM_LINEAR<font face='Lucida Console'>(</font>linear<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_byte<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>png_sRGB_base[<font face='Lucida Console'>(</font>linear<font face='Lucida Console'>)</font><font color='#5555FF'>></font><font color='#5555FF'>></font><font color='#979000'>15</font>] <font color='#5555FF'>+</font>\ |
|
<font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>linear<font face='Lucida Console'>)</font><font color='#5555FF'>&</font><font color='#979000'>0x7fff</font><font face='Lucida Console'>)</font><font color='#5555FF'>*</font>png_sRGB_delta[<font face='Lucida Console'>(</font>linear<font face='Lucida Console'>)</font><font color='#5555FF'>></font><font color='#5555FF'>></font><font color='#979000'>15</font>]<font face='Lucida Console'>)</font><font color='#5555FF'>></font><font color='#5555FF'>></font><font color='#979000'>12</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>></font><font color='#5555FF'>></font> <font color='#979000'>8</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* Given a value 'linear' in the range 0..255*65535 calculate the 8-bit sRGB |
|
* encoded value with maximum error 0.646365. Note that the input is not a |
|
* 16-bit value; it has been multiplied by 255! */</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNG_SIMPLIFIED_READ/WRITE */</font> |
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|
|
|
|
<font color='#009900'>/* Inhibit C++ name-mangling for libpng functions but not for system calls. */</font> |
|
<font color='#0000FF'>#ifdef</font> __cplusplus |
|
<font color='#0000FF'>extern</font> "<font color='#CC0000'>C</font>" <b>{</b> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* __cplusplus */</font> |
|
|
|
<font color='#009900'>/* Internal functions; these are not exported from a DLL however because they |
|
* are used within several of the C source files they have to be C extern. |
|
* |
|
* All of these functions must be declared with PNG_INTERNAL_FUNCTION. |
|
*/</font> |
|
|
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<font color='#009900'>/* Zlib support */</font> |
|
<font color='#0000FF'>#define</font> PNG_UNEXPECTED_ZLIB_RETURN <font face='Lucida Console'>(</font><font color='#5555FF'>-</font><font color='#979000'>7</font><font face='Lucida Console'>)</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>, png_zstream_error,<font face='Lucida Console'>(</font>png_structrp png_ptr, <font color='#0000FF'><u>int</u></font> ret<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Used by the zlib handling functions to ensure that z_stream::msg is always |
|
* set before they return. |
|
*/</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_free_buffer_list,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_compression_bufferp <font color='#5555FF'>*</font>list<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Free the buffer list used by the compressed write code. */</font> |
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<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_FLOATING_POINT_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> \ |
|
<font color='#5555FF'>!</font><b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_FIXED_POINT_MACRO_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> \ |
|
<font face='Lucida Console'>(</font><font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>PNG_gAMA_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>PNG_cHRM_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> \ |
|
<font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>PNG_sCAL_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>PNG_READ_BACKGROUND_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> \ |
|
<font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>PNG_READ_RGB_TO_GRAY_SUPPORTED<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> \ |
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<font face='Lucida Console'>(</font><font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>PNG_sCAL_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> \ |
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<font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>PNG_FLOATING_ARITHMETIC_SUPPORTED<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_fixed_point,png_fixed,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
<font color='#0000FF'><u>double</u></font> fp, png_const_charp text<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#009900'>/* Check the user version string for compatibility, returns false if the version |
|
* numbers aren't compatible. |
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*/</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_user_version_check,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_charp user_png_ver<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
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<font color='#009900'>/* Internal base allocator - no messages, NULL on failure to allocate. This |
|
* does, however, call the application provided allocator and that could call |
|
* png_error (although that would be a bug in the application implementation.) |
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*/</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_voidp,png_malloc_base,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
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png_alloc_size_t size<font face='Lucida Console'>)</font>,PNG_ALLOCATED<font face='Lucida Console'>)</font>; |
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|
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<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_TEXT_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>PNG_sPLT_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>\ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED<font face='Lucida Console'>)</font> |
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<font color='#009900'>/* Internal array allocator, outputs no error or warning messages on failure, |
|
* just returns NULL. |
|
*/</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_voidp,png_malloc_array,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
<font color='#0000FF'><u>int</u></font> nelements, <font color='#0000FF'><u>size_t</u></font> element_size<font face='Lucida Console'>)</font>,PNG_ALLOCATED<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* The same but an existing array is extended by add_elements. This function |
|
* also memsets the new elements to 0 and copies the old elements. The old |
|
* array is not freed or altered. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_voidp,png_realloc_array,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_const_voidp array, <font color='#0000FF'><u>int</u></font> old_elements, <font color='#0000FF'><u>int</u></font> add_elements, |
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<font color='#0000FF'><u>size_t</u></font> element_size<font face='Lucida Console'>)</font>,PNG_ALLOCATED<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* text, sPLT or unknown chunks */</font> |
|
|
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<font color='#009900'>/* Magic to create a struct when there is no struct to call the user supplied |
|
* memory allocators. Because error handling has not been set up the memory |
|
* handlers can't safely call png_error, but this is an obscure and undocumented |
|
* restriction so libpng has to assume that the 'free' handler, at least, might |
|
* call png_error. |
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*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_structp,png_create_png_struct, |
|
<font face='Lucida Console'>(</font>png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, |
|
png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, |
|
png_free_ptr free_fn<font face='Lucida Console'>)</font>,PNG_ALLOCATED<font face='Lucida Console'>)</font>; |
|
|
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<font color='#009900'>/* Free memory from internal libpng struct */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_destroy_png_struct,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Free an allocated jmp_buf (always succeeds) */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_free_jmpbuf,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Function to allocate memory for zlib. PNGAPI is disallowed. */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>voidpf,png_zalloc,<font face='Lucida Console'>(</font>voidpf png_ptr, uInt items, uInt size<font face='Lucida Console'>)</font>, |
|
PNG_ALLOCATED<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Function to free memory for zlib. PNGAPI is disallowed. */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_zfree,<font face='Lucida Console'>(</font>voidpf png_ptr, voidpf ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Next four functions are used internally as callbacks. PNGCBAPI is required |
|
* but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3, changed to |
|
* PNGCBAPI at 1.5.0 |
|
*/</font> |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font> PNGCBAPI,png_default_read_data,<font face='Lucida Console'>(</font>png_structp png_ptr, |
|
png_bytep data, png_size_t length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_PROGRESSIVE_READ_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font> PNGCBAPI,png_push_fill_buffer,<font face='Lucida Console'>(</font>png_structp png_ptr, |
|
png_bytep buffer, png_size_t length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font> PNGCBAPI,png_default_write_data,<font face='Lucida Console'>(</font>png_structp png_ptr, |
|
png_bytep data, png_size_t length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_FLUSH_SUPPORTED |
|
# ifdef PNG_STDIO_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font> PNGCBAPI,png_default_flush,<font face='Lucida Console'>(</font>png_structp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Reset the CRC variable */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_reset_crc,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Write the "data" buffer to whatever output you are using */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_data,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_bytep data, png_size_t length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Read and check the PNG file signature */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_sig,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Read the chunk header (length + type name) */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_uint_32,png_read_chunk_header,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Read data from whatever input you are using into the "data" buffer */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_data,<font face='Lucida Console'>(</font>png_structrp png_ptr, png_bytep data, |
|
png_size_t length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Read bytes into buf, and update png_ptr->crc */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_crc_read,<font face='Lucida Console'>(</font>png_structrp png_ptr, png_bytep buf, |
|
png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_crc_finish,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_uint_32 skip<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Read the CRC from the file and compare it to the libpng calculated CRC */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_crc_error,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Calculate the CRC over a section of data. Note that we are only |
|
* passing a maximum of 64K on systems that have this as a memory limit, |
|
* since this is the maximum buffer size we can specify. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_calculate_crc,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_bytep ptr, png_size_t length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_FLUSH_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_flush,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Write various chunks */</font> |
|
|
|
<font color='#009900'>/* Write the IHDR chunk, and update the png_struct with the necessary |
|
* information. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_IHDR,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_uint_32 width, png_uint_32 height, <font color='#0000FF'><u>int</u></font> bit_depth, <font color='#0000FF'><u>int</u></font> color_type, |
|
<font color='#0000FF'><u>int</u></font> compression_method, <font color='#0000FF'><u>int</u></font> filter_method, <font color='#0000FF'><u>int</u></font> interlace_method<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_PLTE,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_colorp palette, png_uint_32 num_pal<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_compress_IDAT,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_bytep row_data, png_alloc_size_t row_data_length, <font color='#0000FF'><u>int</u></font> flush<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_IEND,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_gAMA_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_gAMA_fixed,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_fixed_point file_gamma<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_sBIT_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_sBIT,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_color_8p sbit, <font color='#0000FF'><u>int</u></font> color_type<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_cHRM_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_cHRM_fixed,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
<font color='#0000FF'>const</font> png_xy <font color='#5555FF'>*</font>xy<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* The xy value must have been previously validated */</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_sRGB_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_sRGB,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
<font color='#0000FF'><u>int</u></font> intent<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_iCCP_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_iCCP,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_charp name, png_const_bytep profile<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* The profile must have been previously validated for correctness, the |
|
* length comes from the first four bytes. Only the base, deflate, |
|
* compression is supported. |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_sPLT_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_sPLT,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_sPLT_tp palette<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_tRNS_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_tRNS,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_bytep trans, png_const_color_16p values, <font color='#0000FF'><u>int</u></font> number, |
|
<font color='#0000FF'><u>int</u></font> color_type<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_bKGD_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_bKGD,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_color_16p values, <font color='#0000FF'><u>int</u></font> color_type<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_hIST_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_hIST,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_uint_16p hist, <font color='#0000FF'><u>int</u></font> num_hist<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Chunks that have keywords */</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_tEXt_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_tEXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_charp key, png_const_charp text, png_size_t text_len<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_zTXt_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_zTXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, png_const_charp |
|
key, png_const_charp text, png_size_t text_len, <font color='#0000FF'><u>int</u></font> compression<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_iTXt_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_iTXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
<font color='#0000FF'><u>int</u></font> compression, png_const_charp key, png_const_charp lang, |
|
png_const_charp lang_key, png_const_charp text<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_TEXT_SUPPORTED <font color='#009900'>/* Added at version 1.0.14 and 1.2.4 */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_set_text_2,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_inforp info_ptr, png_const_textp text_ptr, <font color='#0000FF'><u>int</u></font> num_text<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_oFFs_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_oFFs,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_int_32 x_offset, png_int_32 y_offset, <font color='#0000FF'><u>int</u></font> unit_type<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_pCAL_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_pCAL,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_charp purpose, png_int_32 X0, png_int_32 X1, <font color='#0000FF'><u>int</u></font> type, <font color='#0000FF'><u>int</u></font> nparams, |
|
png_const_charp units, png_charpp params<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_pHYs_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_pHYs,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, |
|
<font color='#0000FF'><u>int</u></font> unit_type<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_tIME_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_tIME,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_const_timep mod_time<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_sCAL_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_sCAL_s,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
<font color='#0000FF'><u>int</u></font> unit, png_const_charp width, png_const_charp height<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Called when finished processing a row of data */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_finish_row,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Internal use only. Called before first row of data */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_start_row,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Combine a row of data, dealing with alpha, etc. if requested. 'row' is an |
|
* array of png_ptr->width pixels. If the image is not interlaced or this |
|
* is the final pass this just does a memcpy, otherwise the "display" flag |
|
* is used to determine whether to copy pixels that are not in the current pass. |
|
* |
|
* Because 'png_do_read_interlace' (below) replicates pixels this allows this |
|
* function to achieve the documented 'blocky' appearance during interlaced read |
|
* if display is 1 and the 'sparkle' appearance, where existing pixels in 'row' |
|
* are not changed if they are not in the current pass, when display is 0. |
|
* |
|
* 'display' must be 0 or 1, otherwise the memcpy will be done regardless. |
|
* |
|
* The API always reads from the png_struct row buffer and always assumes that |
|
* it is full width (png_do_read_interlace has already been called.) |
|
* |
|
* This function is only ever used to write to row buffers provided by the |
|
* caller of the relevant libpng API and the row must have already been |
|
* transformed by the read transformations. |
|
* |
|
* The PNG_USE_COMPILE_TIME_MASKS option causes generation of pre-computed |
|
* bitmasks for use within the code, otherwise runtime generated masks are used. |
|
* The default is compile time masks. |
|
*/</font> |
|
<font color='#0000FF'>#ifndef</font> PNG_USE_COMPILE_TIME_MASKS |
|
# define PNG_USE_COMPILE_TIME_MASKS <font color='#979000'>1</font> |
|
<font color='#0000FF'>#endif</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_combine_row,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_bytep row, <font color='#0000FF'><u>int</u></font> display<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_INTERLACING_SUPPORTED |
|
<font color='#009900'>/* Expand an interlaced row: the 'row_info' describes the pass data that has |
|
* been read in and must correspond to the pixels in 'row', the pixels are |
|
* expanded (moved apart) in 'row' to match the final layout, when doing this |
|
* the pixels are *replicated* to the intervening space. This is essential for |
|
* the correct operation of png_combine_row, above. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_read_interlace,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row, <font color='#0000FF'><u>int</u></font> pass, png_uint_32 transformations<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_INTERLACING_SUPPORTED |
|
<font color='#009900'>/* Grab pixels out of a row for an interlaced pass */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_write_interlace,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row, <font color='#0000FF'><u>int</u></font> pass<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Unfilter a row: check the filter value before calling this, there is no point |
|
* calling it for PNG_FILTER_VALUE_NONE. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_filter_row,<font face='Lucida Console'>(</font>png_structrp pp, png_row_infop |
|
row_info, png_bytep row, png_const_bytep prev_row, <font color='#0000FF'><u>int</u></font> filter<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_filter_row_up_neon,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row, png_const_bytep prev_row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_filter_row_sub3_neon,<font face='Lucida Console'>(</font>png_row_infop |
|
row_info, png_bytep row, png_const_bytep prev_row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_filter_row_sub4_neon,<font face='Lucida Console'>(</font>png_row_infop |
|
row_info, png_bytep row, png_const_bytep prev_row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_filter_row_avg3_neon,<font face='Lucida Console'>(</font>png_row_infop |
|
row_info, png_bytep row, png_const_bytep prev_row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_filter_row_avg4_neon,<font face='Lucida Console'>(</font>png_row_infop |
|
row_info, png_bytep row, png_const_bytep prev_row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_filter_row_paeth3_neon,<font face='Lucida Console'>(</font>png_row_infop |
|
row_info, png_bytep row, png_const_bytep prev_row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_filter_row_paeth4_neon,<font face='Lucida Console'>(</font>png_row_infop |
|
row_info, png_bytep row, png_const_bytep prev_row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Choose the best filter to use and filter the row data */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_write_find_filter,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_row_infop row_info<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_SEQUENTIAL_READ_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_IDAT_data,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_bytep output, png_alloc_size_t avail_out<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Read 'avail_out' bytes of data from the IDAT stream. If the output buffer |
|
* is NULL the function checks, instead, for the end of the stream. In this |
|
* case a benign error will be issued if the stream end is not found or if |
|
* extra data has to be consumed. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_finish_IDAT,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* This cleans up when the IDAT LZ stream does not end when the last image |
|
* byte is read; there is still some pending input. |
|
*/</font> |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_finish_row,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Finish a row while reading, dealing with interlacing passes, etc. */</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Initialize the row buffers, etc. */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_start_row,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_TRANSFORMS_SUPPORTED |
|
<font color='#009900'>/* Optional call to update the users info structure */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_transform_info,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* These are the functions that do the transformations */</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_READ_FILLER_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_read_filler,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row, png_uint_32 filler, png_uint_32 flags<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_SWAP_ALPHA_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_read_swap_alpha,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_SWAP_ALPHA_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_write_swap_alpha,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_INVERT_ALPHA_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_read_invert_alpha,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_INVERT_ALPHA_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_write_invert_alpha,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_WRITE_FILLER_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> \ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_READ_STRIP_ALPHA_SUPPORTED<font face='Lucida Console'>)</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_strip_channel,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row, <font color='#0000FF'><u>int</u></font> at_start<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_16BIT_SUPPORTED |
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_SWAP_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>PNG_WRITE_SWAP_SUPPORTED<font face='Lucida Console'>)</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_swap,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_PACKSWAP_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> \ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_WRITE_PACKSWAP_SUPPORTED<font face='Lucida Console'>)</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_packswap,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_RGB_TO_GRAY_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_do_rgb_to_gray,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_row_infop row_info, png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifdef</font> PNG_READ_GRAY_TO_RGB_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_gray_to_rgb,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifdef</font> PNG_READ_PACK_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_unpack,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifdef</font> PNG_READ_SHIFT_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_unshift,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_const_color_8p sig_bits<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_INVERT_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>PNG_WRITE_INVERT_SUPPORTED<font face='Lucida Console'>)</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_invert,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifdef</font> PNG_READ_SCALE_16_TO_8_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_scale_16_to_8,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifdef</font> PNG_READ_STRIP_16_TO_8_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_chop,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifdef</font> PNG_READ_QUANTIZE_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_quantize,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_const_bytep palette_lookup, |
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png_const_bytep quantize_lookup<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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# ifdef PNG_CORRECT_PALETTE_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_correct_palette,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_colorp palette, <font color='#0000FF'><u>int</u></font> num_palette<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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# endif |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_BGR_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>PNG_WRITE_BGR_SUPPORTED<font face='Lucida Console'>)</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_bgr,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_WRITE_PACK_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_pack,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_uint_32 bit_depth<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#ifdef</font> PNG_WRITE_SHIFT_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_shift,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_const_color_8p bit_depth<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_BACKGROUND_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>\ |
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<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_READ_ALPHA_MODE_SUPPORTED<font face='Lucida Console'>)</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_compose,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_GAMMA_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_gamma,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_ALPHA_MODE_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_encode_alpha,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_EXPAND_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_expand_palette,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_const_colorp palette, png_const_bytep trans, |
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<font color='#0000FF'><u>int</u></font> num_trans<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_expand,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row, png_const_color_16p trans_color<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_EXPAND_16_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_expand_16,<font face='Lucida Console'>(</font>png_row_infop row_info, |
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png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#009900'>/* The following decodes the appropriate chunks, and does error correction, |
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* then calls the appropriate callback for the chunk if it is valid. |
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*/</font> |
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|
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<font color='#009900'>/* Decode the IHDR chunk */</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_IHDR,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_PLTE,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_IEND,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_bKGD_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_bKGD,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_cHRM_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_cHRM,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_gAMA_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_gAMA,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_hIST_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_hIST,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_iCCP_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_iCCP,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNG_READ_iCCP_SUPPORTED */</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_iTXt_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_iTXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_oFFs_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_oFFs,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_pCAL_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_pCAL,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_pHYs_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_pHYs,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_sBIT_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_sBIT,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_sCAL_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_sCAL,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_sPLT_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_sPLT,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNG_READ_sPLT_SUPPORTED */</font> |
|
|
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<font color='#0000FF'>#ifdef</font> PNG_READ_sRGB_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_sRGB,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
|
|
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<font color='#0000FF'>#ifdef</font> PNG_READ_tEXt_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_tEXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
|
|
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<font color='#0000FF'>#ifdef</font> PNG_READ_tIME_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_tIME,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_tRNS_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_tRNS,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_zTXt_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_zTXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_check_chunk_name,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_uint_32 chunk_name<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
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<font color='#0000FF'>#ifdef</font> PNG_SET_UNKNOWN_CHUNKS_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_handle_unknown,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length, <font color='#0000FF'><u>int</u></font> keep<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* This is the function that gets called for unknown chunks. The 'keep' |
|
* argument is either non-zero for a known chunk that has been set to be |
|
* handled as unknown or zero for an unknown chunk. By default the function |
|
* just skips the chunk or errors out if it is critical. |
|
*/</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_UNKNOWN_CHUNKS_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>\ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_HANDLE_AS_UNKNOWN_SUPPORTED<font face='Lucida Console'>)</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_chunk_unknown_handling, |
|
<font face='Lucida Console'>(</font>png_const_structrp png_ptr, png_uint_32 chunk_name<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Exactly as the API png_handle_as_unknown() except that the argument is a |
|
* 32-bit chunk name, not a string. |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* READ_UNKNOWN_CHUNKS || HANDLE_AS_UNKNOWN */</font> |
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<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNG_SET_UNKNOWN_CHUNKS_SUPPORTED */</font> |
|
|
|
<font color='#009900'>/* Handle the transformations for reading and writing */</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_READ_TRANSFORMS_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_read_transformations,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_row_infop row_info<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_WRITE_TRANSFORMS_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_write_transformations,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_row_infop row_info<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_TRANSFORMS_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_init_read_transformations,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
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<font color='#0000FF'>#ifdef</font> PNG_PROGRESSIVE_READ_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_read_chunk,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_read_sig,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_check_crc,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_crc_skip,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_crc_finish,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_save_buffer,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_restore_buffer,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_bytep buffer, png_size_t buffer_length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_read_IDAT,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_process_IDAT_data,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_bytep buffer, png_size_t buffer_length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_process_row,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_handle_unknown,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_have_info,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_have_end,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_have_row,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_read_end,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_process_some_data,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_read_push_finish_row,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
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# ifdef PNG_READ_tEXt_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_handle_tEXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_read_tEXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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# endif |
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# ifdef PNG_READ_zTXt_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_handle_zTXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_read_zTXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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# endif |
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# ifdef PNG_READ_iTXt_SUPPORTED |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_handle_iTXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr, png_uint_32 length<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_push_read_iTXt,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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# endif |
|
|
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<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNG_PROGRESSIVE_READ_SUPPORTED */</font> |
|
|
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<font color='#0000FF'>#ifdef</font> PNG_MNG_FEATURES_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_read_intrapixel,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_write_intrapixel,<font face='Lucida Console'>(</font>png_row_infop row_info, |
|
png_bytep row<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Added at libpng version 1.6.0 */</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_GAMMA_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_colorspace_set_gamma,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_colorspacerp colorspace, png_fixed_point gAMA<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Set the colorspace gamma with a value provided by the application or by |
|
* the gAMA chunk on read. The value will override anything set by an ICC |
|
* profile. |
|
*/</font> |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_colorspace_sync_info,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Synchronize the info 'valid' flags with the colorspace */</font> |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_colorspace_sync,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_inforp info_ptr<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Copy the png_struct colorspace to the info_struct and call the above to |
|
* synchronize the flags. Checks for NULL info_ptr and does nothing. |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Added at libpng version 1.4.0 */</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_COLORSPACE_SUPPORTED |
|
<font color='#009900'>/* These internal functions are for maintaining the colorspace structure within |
|
* a png_info or png_struct (or, indeed, both). |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_colorspace_set_chromaticities, |
|
<font face='Lucida Console'>(</font>png_const_structrp png_ptr, png_colorspacerp colorspace, <font color='#0000FF'>const</font> png_xy <font color='#5555FF'>*</font>xy, |
|
<font color='#0000FF'><u>int</u></font> preferred<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_colorspace_set_endpoints, |
|
<font face='Lucida Console'>(</font>png_const_structrp png_ptr, png_colorspacerp colorspace, <font color='#0000FF'>const</font> png_XYZ <font color='#5555FF'>*</font>XYZ, |
|
<font color='#0000FF'><u>int</u></font> preferred<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_sRGB_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_colorspace_set_sRGB,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_colorspacerp colorspace, <font color='#0000FF'><u>int</u></font> intent<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* This does set the colorspace gAMA and cHRM values too, but doesn't set the |
|
* flags to write them, if it returns false there was a problem and an error |
|
* message has already been output (but the colorspace may still need to be |
|
* synced to record the invalid flag). |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* sRGB */</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_iCCP_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_colorspace_set_ICC,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_colorspacerp colorspace, png_const_charp name, |
|
png_uint_32 profile_length, png_const_bytep profile, <font color='#0000FF'><u>int</u></font> color_type<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* The 'name' is used for information only */</font> |
|
|
|
<font color='#009900'>/* Routines for checking parts of an ICC profile. */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_icc_check_length,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_colorspacerp colorspace, png_const_charp name, |
|
png_uint_32 profile_length<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_icc_check_header,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_colorspacerp colorspace, png_const_charp name, |
|
png_uint_32 profile_length, |
|
png_const_bytep profile <font color='#009900'>/* first 132 bytes only */</font>, <font color='#0000FF'><u>int</u></font> color_type<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_icc_check_tag_table,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_colorspacerp colorspace, png_const_charp name, |
|
png_uint_32 profile_length, |
|
png_const_bytep profile <font color='#009900'>/* header plus whole tag table */</font><font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#ifdef</font> PNG_sRGB_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_icc_set_sRGB,<font face='Lucida Console'>(</font> |
|
png_const_structrp png_ptr, png_colorspacerp colorspace, |
|
png_const_bytep profile, uLong adler<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* 'adler' is the Adler32 checksum of the uncompressed profile data. It may |
|
* be zero to indicate that it is not available. It is used, if provided, |
|
* as a fast check on the profile when checking to see if it is sRGB. |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* iCCP */</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_READ_RGB_TO_GRAY_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_colorspace_set_rgb_coefficients, |
|
<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Set the rgb_to_gray coefficients from the colorspace Y values */</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* READ_RGB_TO_GRAY */</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* COLORSPACE */</font> |
|
|
|
<font color='#009900'>/* Added at libpng version 1.4.0 */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_check_IHDR,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_uint_32 width, png_uint_32 height, <font color='#0000FF'><u>int</u></font> bit_depth, |
|
<font color='#0000FF'><u>int</u></font> color_type, <font color='#0000FF'><u>int</u></font> interlace_type, <font color='#0000FF'><u>int</u></font> compression_type, |
|
<font color='#0000FF'><u>int</u></font> filter_type<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Added at libpng version 1.5.10 */</font> |
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> \ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED<font face='Lucida Console'>)</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_do_check_palette_indexes, |
|
<font face='Lucida Console'>(</font>png_structrp png_ptr, png_row_infop row_info<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_FLOATING_POINT_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> defined<font face='Lucida Console'>(</font>PNG_ERROR_TEXT_SUPPORTED<font face='Lucida Console'>)</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_fixed_error,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_const_charp name<font face='Lucida Console'>)</font>,PNG_NORETURN<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Puts 'string' into 'buffer' at buffer[pos], taking care never to overwrite |
|
* the end. Always leaves the buffer nul terminated. Never errors out (and |
|
* there is no error code.) |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>size_t</u></font>,png_safecat,<font face='Lucida Console'>(</font>png_charp buffer, <font color='#0000FF'><u>size_t</u></font> bufsize, |
|
<font color='#0000FF'><u>size_t</u></font> pos, png_const_charp string<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Various internal functions to handle formatted warning messages, currently |
|
* only implemented for warnings. |
|
*/</font> |
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_WARNINGS_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>PNG_TIME_RFC1123_SUPPORTED<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* Utility to dump an unsigned value into a buffer, given a start pointer and |
|
* and end pointer (which should point just *beyond* the end of the buffer!) |
|
* Returns the pointer to the start of the formatted string. This utility only |
|
* does unsigned values. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_charp,png_format_number,<font face='Lucida Console'>(</font>png_const_charp start, |
|
png_charp end, <font color='#0000FF'><u>int</u></font> format, png_alloc_size_t number<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Convenience macro that takes an array: */</font> |
|
<font color='#0000FF'>#define</font> PNG_FORMAT_NUMBER<font face='Lucida Console'>(</font>buffer,format,number<font face='Lucida Console'>)</font> \ |
|
<b><a name='png_format_number'></a>png_format_number</b><font face='Lucida Console'>(</font>buffer, buffer <font color='#5555FF'>+</font> <font face='Lucida Console'>(</font><font color='#0000FF'>sizeof</font> buffer<font face='Lucida Console'>)</font>, format, number<font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* Suggested size for a number buffer (enough for 64 bits and a sign!) */</font> |
|
<font color='#0000FF'>#define</font> PNG_NUMBER_BUFFER_SIZE <font color='#979000'>24</font> |
|
|
|
<font color='#009900'>/* These are the integer formats currently supported, the name is formed from |
|
* the standard printf(3) format string. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_NUMBER_FORMAT_u <font color='#979000'>1</font> <font color='#009900'>/* chose unsigned API! */</font> |
|
<font color='#0000FF'>#define</font> PNG_NUMBER_FORMAT_02u <font color='#979000'>2</font> |
|
<font color='#0000FF'>#define</font> PNG_NUMBER_FORMAT_d <font color='#979000'>1</font> <font color='#009900'>/* chose signed API! */</font> |
|
<font color='#0000FF'>#define</font> PNG_NUMBER_FORMAT_02d <font color='#979000'>2</font> |
|
<font color='#0000FF'>#define</font> PNG_NUMBER_FORMAT_x <font color='#979000'>3</font> |
|
<font color='#0000FF'>#define</font> PNG_NUMBER_FORMAT_02x <font color='#979000'>4</font> |
|
<font color='#0000FF'>#define</font> PNG_NUMBER_FORMAT_fixed <font color='#979000'>5</font> <font color='#009900'>/* choose the signed API */</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WARNINGS_SUPPORTED |
|
<font color='#009900'>/* New defines and members adding in libpng-1.5.4 */</font> |
|
# define PNG_WARNING_PARAMETER_SIZE <font color='#979000'>32</font> |
|
# define PNG_WARNING_PARAMETER_COUNT <font color='#979000'>8</font> <font color='#009900'>/* Maximum 9; see pngerror.c */</font> |
|
|
|
<font color='#009900'>/* An l-value of this type has to be passed to the APIs below to cache the |
|
* values of the parameters to a formatted warning message. |
|
*/</font> |
|
<font color='#0000FF'>typedef</font> <font color='#0000FF'><u>char</u></font> png_warning_parameters[PNG_WARNING_PARAMETER_COUNT][ |
|
PNG_WARNING_PARAMETER_SIZE]; |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_warning_parameter,<font face='Lucida Console'>(</font>png_warning_parameters p, |
|
<font color='#0000FF'><u>int</u></font> number, png_const_charp string<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Parameters are limited in size to PNG_WARNING_PARAMETER_SIZE characters, |
|
* including the trailing '\0'. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_warning_parameter_unsigned, |
|
<font face='Lucida Console'>(</font>png_warning_parameters p, <font color='#0000FF'><u>int</u></font> number, <font color='#0000FF'><u>int</u></font> format, png_alloc_size_t value<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Use png_alloc_size_t because it is an unsigned type as big as any we |
|
* need to output. Use the following for a signed value. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_warning_parameter_signed, |
|
<font face='Lucida Console'>(</font>png_warning_parameters p, <font color='#0000FF'><u>int</u></font> number, <font color='#0000FF'><u>int</u></font> format, png_int_32 value<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_formatted_warning,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_warning_parameters p, png_const_charp message<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* 'message' follows the X/Open approach of using @1, @2 to insert |
|
* parameters previously supplied using the above functions. Errors in |
|
* specifying the parameters will simply result in garbage substitutions. |
|
*/</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_BENIGN_ERRORS_SUPPORTED |
|
<font color='#009900'>/* Application errors (new in 1.6); use these functions (declared below) for |
|
* errors in the parameters or order of API function calls on read. The |
|
* 'warning' should be used for an error that can be handled completely; the |
|
* 'error' for one which can be handled safely but which may lose application |
|
* information or settings. |
|
* |
|
* By default these both result in a png_error call prior to release, while in a |
|
* released version the 'warning' is just a warning. However if the application |
|
* explicitly disables benign errors (explicitly permitting the code to lose |
|
* information) they both turn into warnings. |
|
* |
|
* If benign errors aren't supported they end up as the corresponding base call |
|
* (png_warning or png_error.) |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_app_warning,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_const_charp message<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* The application provided invalid parameters to an API function or called |
|
* an API function at the wrong time, libpng can completely recover. |
|
*/</font> |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_app_error,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_const_charp message<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* As above but libpng will ignore the call, or attempt some other partial |
|
* recovery from the error. |
|
*/</font> |
|
<font color='#0000FF'>#else</font> |
|
# define <b><a name='png_app_warning'></a>png_app_warning</b><font face='Lucida Console'>(</font>pp,s<font face='Lucida Console'>)</font> <b><a name='png_warning'></a>png_warning</b><font face='Lucida Console'>(</font>pp,s<font face='Lucida Console'>)</font> |
|
# define <b><a name='png_app_error'></a>png_app_error</b><font face='Lucida Console'>(</font>pp,s<font face='Lucida Console'>)</font> <b><a name='png_error'></a>png_error</b><font face='Lucida Console'>(</font>pp,s<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_chunk_report,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_const_charp message, <font color='#0000FF'><u>int</u></font> error<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Report a recoverable issue in chunk data. On read this is used to report |
|
* a problem found while reading a particular chunk and the |
|
* png_chunk_benign_error or png_chunk_warning function is used as |
|
* appropriate. On write this is used to report an error that comes from |
|
* data set via an application call to a png_set_ API and png_app_error or |
|
* png_app_warning is used as appropriate. |
|
* |
|
* The 'error' parameter must have one of the following values: |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_CHUNK_WARNING <font color='#979000'>0</font> <font color='#009900'>/* never an error */</font> |
|
<font color='#0000FF'>#define</font> PNG_CHUNK_WRITE_ERROR <font color='#979000'>1</font> <font color='#009900'>/* an error only on write */</font> |
|
<font color='#0000FF'>#define</font> PNG_CHUNK_ERROR <font color='#979000'>2</font> <font color='#009900'>/* always an error */</font> |
|
|
|
<font color='#009900'>/* ASCII to FP interfaces, currently only implemented if sCAL |
|
* support is required. |
|
*/</font> |
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_sCAL_SUPPORTED<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* MAX_DIGITS is actually the maximum number of characters in an sCAL |
|
* width or height, derived from the precision (number of significant |
|
* digits - a build time settable option) and assumptions about the |
|
* maximum ridiculous exponent. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_sCAL_MAX_DIGITS <font face='Lucida Console'>(</font>PNG_sCAL_PRECISION<font color='#5555FF'>+</font><font color='#979000'>1</font><font color='#009900'>/*.*/</font><font color='#5555FF'>+</font><font color='#979000'>1</font><font color='#009900'>/*E*/</font><font color='#5555FF'>+</font><font color='#979000'>10</font><font color='#009900'>/*exponent*/</font><font face='Lucida Console'>)</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_FLOATING_POINT_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_ascii_from_fp,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_charp ascii, png_size_t size, <font color='#0000FF'><u>double</u></font> fp, <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> precision<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* FLOATING_POINT */</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_FIXED_POINT_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_ascii_from_fixed,<font face='Lucida Console'>(</font>png_const_structrp png_ptr, |
|
png_charp ascii, png_size_t size, png_fixed_point fp<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* FIXED_POINT */</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* sCAL */</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_sCAL_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>PNG_pCAL_SUPPORTED<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* An internal API to validate the format of a floating point number. |
|
* The result is the index of the next character. If the number is |
|
* not valid it will be the index of a character in the supposed number. |
|
* |
|
* The format of a number is defined in the PNG extensions specification |
|
* and this API is strictly conformant to that spec, not anyone elses! |
|
* |
|
* The format as a regular expression is: |
|
* |
|
* [+-]?[0-9]+.?([Ee][+-]?[0-9]+)? |
|
* |
|
* or: |
|
* |
|
* [+-]?.[0-9]+(.[0-9]+)?([Ee][+-]?[0-9]+)? |
|
* |
|
* The complexity is that either integer or fraction must be present and the |
|
* fraction is permitted to have no digits only if the integer is present. |
|
* |
|
* NOTE: The dangling E problem. |
|
* There is a PNG valid floating point number in the following: |
|
* |
|
* PNG floating point numbers are not greedy. |
|
* |
|
* Working this out requires *TWO* character lookahead (because of the |
|
* sign), the parser does not do this - it will fail at the 'r' - this |
|
* doesn't matter for PNG sCAL chunk values, but it requires more care |
|
* if the value were ever to be embedded in something more complex. Use |
|
* ANSI-C strtod if you need the lookahead. |
|
*/</font> |
|
<font color='#009900'>/* State table for the parser. */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_INTEGER <font color='#979000'>0</font> <font color='#009900'>/* before or in integer */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_FRACTION <font color='#979000'>1</font> <font color='#009900'>/* before or in fraction */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_EXPONENT <font color='#979000'>2</font> <font color='#009900'>/* before or in exponent */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_STATE <font color='#979000'>3</font> <font color='#009900'>/* mask for the above */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_SAW_SIGN <font color='#979000'>4</font> <font color='#009900'>/* Saw +/- in current state */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_SAW_DIGIT <font color='#979000'>8</font> <font color='#009900'>/* Saw a digit in current state */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_SAW_DOT <font color='#979000'>16</font> <font color='#009900'>/* Saw a dot in current state */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_SAW_E <font color='#979000'>32</font> <font color='#009900'>/* Saw an E (or e) in current state */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_SAW_ANY <font color='#979000'>60</font> <font color='#009900'>/* Saw any of the above 4 */</font> |
|
|
|
<font color='#009900'>/* These three values don't affect the parser. They are set but not used. |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_WAS_VALID <font color='#979000'>64</font> <font color='#009900'>/* Preceding substring is a valid fp number */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_NEGATIVE <font color='#979000'>128</font> <font color='#009900'>/* A negative number, including "-0" */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_NONZERO <font color='#979000'>256</font> <font color='#009900'>/* A non-zero value */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_STICKY <font color='#979000'>448</font> <font color='#009900'>/* The above three flags */</font> |
|
|
|
<font color='#009900'>/* This is available for the caller to store in 'state' if required. Do not |
|
* call the parser after setting it (the parser sometimes clears it.) |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_INVALID <font color='#979000'>512</font> <font color='#009900'>/* Available for callers as a distinct value */</font> |
|
|
|
<font color='#009900'>/* Result codes for the parser (boolean - true meants ok, false means |
|
* not ok yet.) |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_MAYBE <font color='#979000'>0</font> <font color='#009900'>/* The number may be valid in the future */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_OK <font color='#979000'>1</font> <font color='#009900'>/* The number is valid */</font> |
|
|
|
<font color='#009900'>/* Tests on the sticky non-zero and negative flags. To pass these checks |
|
* the state must also indicate that the whole number is valid - this is |
|
* achieved by testing PNG_FP_SAW_DIGIT (see the implementation for why this |
|
* is equivalent to PNG_FP_OK above.) |
|
*/</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_NZ_MASK <font face='Lucida Console'>(</font>PNG_FP_SAW_DIGIT <font color='#5555FF'>|</font> PNG_FP_NEGATIVE <font color='#5555FF'>|</font> PNG_FP_NONZERO<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* NZ_MASK: the string is valid and a non-zero negative value */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_Z_MASK <font face='Lucida Console'>(</font>PNG_FP_SAW_DIGIT <font color='#5555FF'>|</font> PNG_FP_NONZERO<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* Z MASK: the string is valid and a non-zero value. */</font> |
|
<font color='#009900'>/* PNG_FP_SAW_DIGIT: the string is valid. */</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_IS_ZERO<font face='Lucida Console'>(</font>state<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>state<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> PNG_FP_Z_MASK<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> PNG_FP_SAW_DIGIT<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_IS_POSITIVE<font face='Lucida Console'>(</font>state<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>state<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> PNG_FP_NZ_MASK<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> PNG_FP_Z_MASK<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#define</font> PNG_FP_IS_NEGATIVE<font face='Lucida Console'>(</font>state<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>state<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font> PNG_FP_NZ_MASK<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> PNG_FP_NZ_MASK<font face='Lucida Console'>)</font> |
|
|
|
<font color='#009900'>/* The actual parser. This can be called repeatedly. It updates |
|
* the index into the string and the state variable (which must |
|
* be initialized to 0). It returns a result code, as above. There |
|
* is no point calling the parser any more if it fails to advance to |
|
* the end of the string - it is stuck on an invalid character (or |
|
* terminated by '\0'). |
|
* |
|
* Note that the pointer will consume an E or even an E+ and then leave |
|
* a 'maybe' state even though a preceding integer.fraction is valid. |
|
* The PNG_FP_WAS_VALID flag indicates that a preceding substring was |
|
* a valid number. It's possible to recover from this by calling |
|
* the parser again (from the start, with state 0) but with a string |
|
* that omits the last character (i.e. set the size to the index of |
|
* the problem character.) This has not been tested within libpng. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_check_fp_number,<font face='Lucida Console'>(</font>png_const_charp string, |
|
png_size_t size, <font color='#0000FF'><u>int</u></font> <font color='#5555FF'>*</font>statep, png_size_tp whereami<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* This is the same but it checks a complete string and returns true |
|
* only if it just contains a floating point number. As of 1.5.4 this |
|
* function also returns the state at the end of parsing the number if |
|
* it was valid (otherwise it returns 0.) This can be used for testing |
|
* for negative or zero values using the sticky flag. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_check_fp_string,<font face='Lucida Console'>(</font>png_const_charp string, |
|
png_size_t size<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* pCAL || sCAL */</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_GAMMA_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>\ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_INCH_CONVERSIONS_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_READ_pHYs_SUPPORTED<font face='Lucida Console'>)</font> |
|
<font color='#009900'>/* Added at libpng version 1.5.0 */</font> |
|
<font color='#009900'>/* This is a utility to provide a*times/div (rounded) and indicate |
|
* if there is an overflow. The result is a boolean - false (0) |
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* for overflow, true (1) if no overflow, in which case *res |
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* holds the result. |
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*/</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_muldiv,<font face='Lucida Console'>(</font>png_fixed_point_p res, png_fixed_point a, |
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png_int_32 multiplied_by, png_int_32 divided_by<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_READ_GAMMA_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>PNG_INCH_CONVERSIONS_SUPPORTED<font face='Lucida Console'>)</font> |
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<font color='#009900'>/* Same deal, but issue a warning on overflow and return 0. */</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_fixed_point,png_muldiv_warn, |
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<font face='Lucida Console'>(</font>png_const_structrp png_ptr, png_fixed_point a, png_int_32 multiplied_by, |
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png_int_32 divided_by<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_GAMMA_SUPPORTED |
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<font color='#009900'>/* Calculate a reciprocal - used for gamma values. This returns |
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* 0 if the argument is 0 in order to maintain an undefined value; |
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* there are no warnings. |
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*/</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_fixed_point,png_reciprocal,<font face='Lucida Console'>(</font>png_fixed_point a<font face='Lucida Console'>)</font>, |
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PNG_EMPTY<font face='Lucida Console'>)</font>; |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_GAMMA_SUPPORTED |
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<font color='#009900'>/* The same but gives a reciprocal of the product of two fixed point |
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* values. Accuracy is suitable for gamma calculations but this is |
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* not exact - use png_muldiv for that. Only required at present on read. |
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*/</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_fixed_point,png_reciprocal2,<font face='Lucida Console'>(</font>png_fixed_point a, |
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png_fixed_point b<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#009900'>/* Return true if the gamma value is significantly different from 1.0 */</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_gamma_significant,<font face='Lucida Console'>(</font>png_fixed_point gamma_value<font face='Lucida Console'>)</font>, |
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PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>#endif</font> |
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|
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<font color='#0000FF'>#ifdef</font> PNG_READ_GAMMA_SUPPORTED |
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<font color='#009900'>/* Internal fixed point gamma correction. These APIs are called as |
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* required to convert single values - they don't need to be fast, |
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* they are not used when processing image pixel values. |
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* |
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* While the input is an 'unsigned' value it must actually be the |
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* correct bit value - 0..255 or 0..65535 as required. |
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*/</font> |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_uint_16,png_gamma_correct,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> value, png_fixed_point gamma_value<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_uint_16,png_gamma_16bit_correct,<font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> value, |
|
png_fixed_point gamma_value<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font>png_byte,png_gamma_8bit_correct,<font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> value, |
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png_fixed_point gamma_value<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
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<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_destroy_gamma_table,<font face='Lucida Console'>(</font>png_structrp png_ptr<font face='Lucida Console'>)</font>, |
|
PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_build_gamma_table,<font face='Lucida Console'>(</font>png_structrp png_ptr, |
|
<font color='#0000FF'><u>int</u></font> bit_depth<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* SIMPLIFIED READ/WRITE SUPPORT */</font> |
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>PNG_SIMPLIFIED_READ_SUPPORTED<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font>\ |
|
<b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>PNG_SIMPLIFIED_WRITE_SUPPORTED<font face='Lucida Console'>)</font> |
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<font color='#009900'>/* The internal structure that png_image::opaque points to. */</font> |
|
<font color='#0000FF'>typedef</font> <font color='#0000FF'>struct</font> <b><a name='png_control'></a>png_control</b> |
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<b>{</b> |
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png_structp png_ptr; |
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png_infop info_ptr; |
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png_voidp error_buf; <font color='#009900'>/* Always a jmp_buf at present. */</font> |
|
|
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png_const_bytep memory; <font color='#009900'>/* Memory buffer. */</font> |
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png_size_t size; <font color='#009900'>/* Size of the memory buffer. */</font> |
|
|
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<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> for_write :<font color='#979000'>1</font>; <font color='#009900'>/* Otherwise it is a read structure */</font> |
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> owned_file :<font color='#979000'>1</font>; <font color='#009900'>/* We own the file in io_ptr */</font> |
|
<b>}</b> png_control; |
|
|
|
<font color='#009900'>/* Return the pointer to the jmp_buf from a png_control: necessary because C |
|
* does not reveal the type of the elements of jmp_buf. |
|
*/</font> |
|
<font color='#0000FF'>#ifdef</font> __cplusplus |
|
# define <b><a name='png_control_jmp_buf'></a>png_control_jmp_buf</b><font face='Lucida Console'>(</font>pc<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>jmp_buf<font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>pc<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>error_buf<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>[<font color='#979000'>0</font>]<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#else</font> |
|
# define <b><a name='png_control_jmp_buf'></a>png_control_jmp_buf</b><font face='Lucida Console'>(</font>pc<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>pc<font face='Lucida Console'>)</font><font color='#5555FF'>-</font><font color='#5555FF'>></font>error_buf<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Utility to safely execute a piece of libpng code catching and logging any |
|
* errors that might occur. Returns true on success, false on failure (either |
|
* of the function or as a result of a png_error.) |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_safe_error,<font face='Lucida Console'>(</font>png_structp png_ptr, |
|
png_const_charp error_message<font face='Lucida Console'>)</font>,PNG_NORETURN<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifdef</font> PNG_WARNINGS_SUPPORTED |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>,png_safe_warning,<font face='Lucida Console'>(</font>png_structp png_ptr, |
|
png_const_charp warning_message<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#else</font> |
|
# define png_safe_warning <font color='#979000'>0</font><font color='#009900'>/*dummy argument*/</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_safe_execute,<font face='Lucida Console'>(</font>png_imagep image, |
|
<font color='#0000FF'><u>int</u></font> <font face='Lucida Console'>(</font><font color='#5555FF'>*</font>function<font face='Lucida Console'>)</font><font face='Lucida Console'>(</font>png_voidp<font face='Lucida Console'>)</font>, png_voidp arg<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#009900'>/* Utility to log an error; this also cleans up the png_image; the function |
|
* always returns 0 (false). |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font>,png_image_error,<font face='Lucida Console'>(</font>png_imagep image, |
|
png_const_charp error_message<font face='Lucida Console'>)</font>,PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
|
|
<font color='#0000FF'>#ifndef</font> PNG_SIMPLIFIED_READ_SUPPORTED |
|
<font color='#009900'>/* png_image_free is used by the write code but not exported */</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>, png_image_free, <font face='Lucida Console'>(</font>png_imagep image<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* !SIMPLIFIED_READ */</font> |
|
|
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* SIMPLIFIED READ/WRITE */</font> |
|
|
|
<font color='#009900'>/* These are initialization functions for hardware specific PNG filter |
|
* optimizations; list these here then select the appropriate one at compile |
|
* time using the macro PNG_FILTER_OPTIMIZATIONS. If the macro is not defined |
|
* the generic code is used. |
|
*/</font> |
|
<font color='#0000FF'>#ifdef</font> PNG_FILTER_OPTIMIZATIONS |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>, PNG_FILTER_OPTIMIZATIONS, <font face='Lucida Console'>(</font>png_structp png_ptr, |
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> bpp<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#009900'>/* Just declare the optimization that will be used */</font> |
|
<font color='#0000FF'>#else</font> |
|
<font color='#009900'>/* List *all* the possible optimizations here - this branch is required if |
|
* the builder of libpng passes the definition of PNG_FILTER_OPTIMIZATIONS in |
|
* CFLAGS in place of CPPFLAGS *and* uses symbol prefixing. |
|
*/</font> |
|
<b><a name='PNG_INTERNAL_FUNCTION'></a>PNG_INTERNAL_FUNCTION</b><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font>, png_init_filter_functions_neon, |
|
<font face='Lucida Console'>(</font>png_structp png_ptr, <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>int</u></font> bpp<font face='Lucida Console'>)</font>, PNG_EMPTY<font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* Maintainer: Put new private prototypes here ^ */</font> |
|
|
|
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='pngdebug.h.html'>pngdebug.h</a>" |
|
|
|
<font color='#0000FF'>#ifdef</font> __cplusplus |
|
<b>}</b> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNG_VERSION_INFO_ONLY */</font> |
|
<font color='#0000FF'>#endif</font> <font color='#009900'>/* PNGPRIV_H */</font> |
|
|
|
</pre></body></html> |
