mirror of
https://git.code.sf.net/p/libpng/code.git
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31aee0d0c0
Fixed point APIs are now supported throughout (no missing APIs).
Internal fixed point arithmetic support exists for all internal floating
point operations.
sCAL validates the floating point strings it is passed.
Safe, albeit rudimentary, Watcom support is provided by PNG_API_RULE==2
Two new APIs exist to get the number of passes without turning on the
PNG_INTERLACE transform and to get the number of rows in the current
pass.
A new test program, pngvalid.c, validates the gamma code.
Errors in the 16 bit gamma correction (overflows) have been corrected.
cHRM chunk testing is done consistently (previously the floating point
API bypassed it, because the test really didn't work on FP, now the test
is performed on the actual values to be stored in the PNG file so it
works in the FP case too.)
Most floating point APIs now simply call the fixed point APIs after
converting the values to the fixed point form used in the PNG file.
The standard headers no longer include zlib.h, which is currently only
required for pngstruct.h and can therefore be internal.
(Patches by John Bowler)
58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
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/* symbols.dfn - find all exported symbols
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*
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* Last changed in libpng version 1.5.0 [July 29, 2010]
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* Copyright (c) 1998-2010 Glenn Randers-Pehrson
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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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*/
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/* NOTE: making 'symbols.chk' checks both that the exported
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* symbols in the library don't change and (implicitly) that
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* scripts/pnglibconf.h is as expected. If scripts/pnglibconf.h
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* is remade using scripts/pnglibconf.dfa then this checks the
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* .dfa file too.
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*/
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#define PNG_EXPORT(type, name, args, attributes, ordinal)\
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PNG_DEFN_MAGIC-name @ordinal-PNG_DEFN_END
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#define PNG_REMOVED(type, name, args, attributes, ordinal)\
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PNG_DEFN_MAGIC-; name @ordinal-PNG_DEFN_END
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#define PNG_EXPORT_LAST_ORDINAL(ordinal)\
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PNG_DEFN_MAGIC-; @ordinal-PNG_DEFN_END
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/* Read the defaults, but use scripts/pnglibconf.h; the 'standard'
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* header file.
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*/
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#include "pnglibconf.h"
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#include "../png.h"
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/* Some things are turned off by default. Turn these things
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* on here (by hand) to get the APIs they expose and validate
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* that no harm is done. This list is the set of options
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* defaulted to 'off' in scripts/pnglibconf.dfa
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*
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* Maintenance: if scripts/pnglibconf.dfa options are changed
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* from, or to, 'off' this needs updating!
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*/
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#define PNG_BENIGN_ERRORS_SUPPORTED
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#define PNG_ERROR_NUMBERS_SUPPORTED
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#define PNG_READ_BIG_ENDIAN_SUPPORTED /* should do nothing! */
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#define PNG_INCH_CONVERSIONS_SUPPORTED
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#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
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#undef PNG_H
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#include "../png.h"
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/* Finally there are a couple of places where option support
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* actually changes the APIs revealed using a #if/#else/#endif
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* test in png.h, test these here.
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*/
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#undef PNG_FLOATING_POINT_SUPPORTED /* Exposes 'fixed' APIs */
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#undef PNG_ERROR_TEXT_SUPPORTED /* Exposes unsupported APIs */
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#undef PNG_H
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#include "../png.h"
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